I think what many would have missed is that this announcement actually didn’t come from UEFA, but from the European Club Association (I think it’s called), made up of just the elite clubs, and there was just a token footnote to the effect that UEFA has to sign it off. There isn’t even a pretence now that UEFA are actually in charge, or that most clubs/countries in UEFA have any say at all in decision-making. How long will it be before the big clubs force through rule changes to suit them and the TV, like 4-quarter matches to allow more commercial breaks, no drawn matches, no obligation to give players to the national team etc.
I don’t think there’s anything that’s going to stop this direction of travel, and indeed there is an argument that it’s not a bad thing. There are upsides for diddy countries and clubs, but getting cash to them will be the biggest issue.