It's about how differently Madrid and the rest of teams are treated that's all, nothing to do with Vini particularly.
This season a Valencia player, José Luis Gayá, was punished 4 games for criticizing the referee. Madrid's coach, Carlos Ancelotti did the same and nothing happened.
Lewandowski was punished 2 games for touching his nose. However, there are videos of Vini directly insulting referees and nothing happened. Also, Fede Valderde punched a Villarreal player in the face and nothing happened.
That kind of power that lets them get away with everything is really getting on my nerves.