Pretty much every 50/50 has gone their way since then. At the end of the day VAR is just a tool, as long the referees have the final say, they'll keep on getting favoured. I remember reading an article a couple of months back where a retired Spanish referee said 80% of the referees favour Real Madrid over Barcelona.
Yea, Iturralde was the ref in question. His logic was that you don't become a football ref if you're not very passionate about the sport. And if you are passionate about the sport it makes sense that you are a fan of some team in your country. And outside Catalunya, most are Madrid fans. So, it makes sense most refs are Madrid fans based on this logic. So it becomes a matter of which one is professional enough to be impartial and not let this affect his decisions. Some are. Some aren't and you can see in most of their decisions their pro Madrid bias.
Gil Manzano is an obvious example. That man is sketchy as fuck. He was the guy that robbed Villareal at home vs Madrid giving a hilarious pen. for Madrid at 2-1 for Villareal, and after the match, Villareal's officials spotted him leaving the stadium with loaded Madrid branded bags.
Man's a die hard Madrid fan.