The concept of talent is interesting and one that will perhaps be understood far better in the future when/if we get more breakthroughs on how genetics plays a role in ourselves and may well blow my ideas out of the water, but here is my take on it for now.
First of all, in most areas of life I believe the differences between people talent-wise are minimal. I'm not saying that some people are not born with natural advantages, but these advantages to me seem minimal. I think people look at successful or seemingly naturally talented people and assume that this is some form of gift given to them. The only thing I think is given in this sense is a singing voice and modelling looks. Vocal cords and physical looks are what you are born with and are very hard to change. However, most other things can be developed.
I can understand why when someone writes incredible lyrics or knocks out their opponents with ease that people might be baffled as to how they could get that good as it appears so effortless for them. What many people don't realise is the significant effect that the environment around you has on you. The smallest things that we fail to notice often have an influence on us without us realising it. When you look at a lot of these talented people and their lives deeply enough, you can probably start to work out what it was in their environment that helped develop them into whatever they are.
I have a friend who is an incredible lyricist and the words that he manages to put together is so mesmerising to me. A lot of our mutual friends have labelled him talented, but I think that takes away a lot from him. Although it's meant as a compliment, I think it actually works as an insult. In trying to understand this, what I found and what most other people failed to realise is that this person has grown up around literature all their life. Their parents were involved in writing and they have family involved in the distribution of books and so from a young age they were encouraged and fed words and different ways of putting words together. This surely inspired them to fall in love with words and coupled with that, this person dedicates hours and hours every day thinking about lyrics, poems and takes in other peoples literature too. This was a combination of being surrounded by and effectively being taught lyricism (is this a word?) from such a young age coupled with very hard work day in day out, is, in my opinion, going to produce what seems to everyone else, a very talented lyricist. To just label him talented is an insult to the passion and hard work he has put into his art.
One of my coaches is regarded as a highly talented Brazilian Jiu-Jitsu black belt. Even if you do not know what sport I am talking about, if you saw a video of the stuff he does, you would be in awe of how well he controls people and the manner in which does this. I remember a conversation I had with him about a year ago and what people may not realise is that he wasn't just unfairly given this gift of being good, he was a student of the game to the point of obsession (the obsession bit is my opinion and is meant in the good sense). He would train for hours every day and part of that would consist of going home and studying what went wrong that day in the session and obsessing on how he could improve that (If he is reading this, please correct me if I'm wrong). Most of those who practice regularly don't train THAT much. They don't go home afterwards just thinking about jiu-jitsu and why they did what they did and how are they going to do it next time. Most people turn their attention to something else, and even if they thought about it, they won't usually go back and do extra sessions to improve on those mistakes. There is the key difference. My coach should not be labelled just talented, but a dedicated student of his art in the same way as my lyricist friend, otherwise we are taking away from them the passion and hard work they have put in which most people don't.
Floyd Mayweather made a good point leading up to one of his boxing matches, stating when his opponent is training, he is training and when his opponent is sleeping, he is training.
I feel there are various bad reasons as to why people use the word talented to describe other people. I feel it gives the person saying it about someone else a reason to feel better about themselves and assume the talented person was unfairly handed a gift, because they refused to dedicate to their life the same level of hard work required to become any good at something. It means that that person isn't burdened with the truth that they could have done something about it, but didn't make the effort.
You also often hear some 'talented' people believe it is a natural given talent because it makes them feel special and gives them a sense of superiority over others. After all if you believe you had a gift from god, then you must be one of his chosen ones (why people believe that god would give anyone the 'gift' of being able to smash someone's face in or run a tenth of a second faster than anyone else for money is beyond me).
Even if people do have an aptitude for something, Usain Bolt is ONLY actually a few hundredths of a second faster than the next guy. This may seem like light years in the world of 100 metres racing but in the real world it is only a few hundredths and we often use that difference as enough of an excuse to not try it ourselves.
We are all talented.