Honestly you're right, I don't think Vinicius will stay with Real Madrid for very long if he doesn't change this mindset because Real Madrid doesn't rely on players who are too proud, and what he's doing now will impact the team as a whole. Problems like this are what used to cause players to ignore one another on the field. if it was the last two seasons that Vinicius junior contributed a lot to Real Madrid to achieved many glory, no one will complain about his terms, because in football the more your efforts the more you'll earn. So I don't think Vinicius current performance makes him worthy of getting the same compensation as Kylian Mbappe because despite Real Madrid's poor season last year, Kylian Mbappe struggled to create an impression for the team,
It is such a weird thing to see that a player moving from being the best player in the team, all fans going crazy online when he didn't get Ballon d'or, and then suddenly he is the player that is not wanted in the team. We should be considering that it is not going to be good for the team at the moment and he is hurting them more than he is helping them.
By the way, not like he is a bad player, nobody would ever say that, he is a great player. However, is personality is creating locker room drama and that is going ot be the trouble. If he had a better personality ,or if matures a bit and does better, then sure he can be good help. But as long as he is childish and acting out, that will continue to be an issue for them.