As pointed out by u/HenryReturns in a post on r/soccer, earlier this season RMTV made similar attacks against other referees, which, upon closer inspection, appear to have benefited Real Madrid.
In October, RMTV criticized referee José María Sánchez Martínez Munuera after Barcelona won 4-0. Despite the heavy defeat, the referee saved Vinicius from a potential red card, penalized Barcelona players for complaining, and avoided issuing multiple yellow cards to Madrid players for fouls.
In January, during the Super Cup, RMTV attacked referee Gil Manzano, despite the fact that Madrid had a 100% win rate with him officiating Clasicos. While Barcelona won 5-2, Gil Manzano made several decisions that appeared to benefit Real Madrid. For example, when Mbappé was injured, the referee allowed him to be treated on the pitch without stopping play. However, when Iñigo Martínez was injured, the referee immediately instructed him to leave the field for treatment. Gil Manzano also avoided sending off Vinicius and Camavinga, who were both on yellow cards despite committing fouls deserving of a second.