Whiney interviews won’t change anything. But imagine all teams collectively boycotting an entire matchday. They just refuse to play. This would do huge damage to the leagues, UEFA, FIFA etc. And the clubs or associations can’t just punish everyone. They rely on the players. Don’t the players even have a union? So why is nothing like that happening? The only reason I can think of is that the pain isn’t strong enough yet to actually act.
IMO UEFA, FIFA etc. aren’t even the problem.
The clubs are. They’re the ones that pick the players in those matches. They could easily use more of their U21 players and rotate more (would probably be better for youth development for them to get more time in first team games too!) but they don’t. They only use them when first team players are out injured and then whinge about it.