That's my fear too, and
@Don Juan Laporta Estruch keeps trying to reassure those of us who are more pessimistic individuals in general that Lamine will have an all-time great level career. He really can have that, but it is so difficult to be brilliant from as young as 16 to as old as 33/34/35 or whatever. I really want him to do it as he's a special, special talent. To be fair I am a bit of a doom merchant and hopefully Yamal can continue to assuage my worst-case scenario thinking.
I think in comparison with Mbappe - Kylian was all pace, power, athleticism, in your face dribbling when young. He's a fairly smart player but he never did show the maturity as a player that Lamine is showing even now, I don't feel. I also feel Lamine is significantly better in tight spaces and has stronger technique and better passing and link up than Kylian. I believe Yamal possesses a maturity as a player (even at such a tender age) that lends itself well to improving in a linear fashion - Mbappe is more of a speed merchant type guy, and that player ages more poorly (though he isn't even old and is still world-class).
In a similar manner, I feel Yamal is less susceptible to the arrogance and cuntishness about his career that Mbappe possesses. Not saying Yamal has no ego because most top players have some degree of it, but I don't feel he will ever put himself or his desire to win individual awards above the team. Now, some people would say that single-minded focus makes a player better, but to me there's a limit to it because it can be to your detriment as a player - you become obsessed with records and goalscoring and neglect the more eye test parts of the game as you age (see Ronaldo).
I believe Yamal has his head screwed on, and will always strike the right balance and blend of being a team player and a maverick individual. He's a smart kid it would appear. I could be totally wrong on this, but I hope not.
So then, if he has the right football attributes and the right mental ones, it becomes about avoiding injury and being best player in the world level for 15 years or so. I believe he can do it but it is a massive ask.