Vini is an excellent player. If he can maintain his fitness, he will become Real Madrid's main striker in the future. But Vini needs to be calmer and more modest. Vinny is a bit fierce. He reacted badly to the referee's decision. Such behavior should be avoided. He needs to be more calm. Also, Vini is often a victim of racism. I don't know why Vini gets attacked every time even though Real Madrid has a lot of black players. Vini may also have some personality issues. But Vini is still young, maybe that's why his nature is a bit fierce.
You raised a lot of sensitive issues here but, one thing I'm keen on is that, Vini Jnr can't future as Real Madrid's main striker. His just as good where he is and that is, playing from the wing. He's work there has is vital and has been helping the team. He still has scoring opportunity to cut in and the a shot or even make crosses that could turn into attacks. Converting him to a striker wouldn't work so well as he would need someone feeding him the passes and that's what his more better at, feeding Benzema and Asensio the passes.
Talking about Racism, it's been a problem from time and the football federation has been doing there best to put it to a stop but, this is people we are talking about here. Human beings will always exhibit whatever behaviour they wish to but, in the quest for a change, time is of the essence.
Vini Jnr might be the one to have spoken up or reacted but, his not the only one at the end of the lash. Many are but chose to stay silent.