Cheesing may not have been THE problem, however, it certainly was A problem. I saw someone's HP jumping suspiciously pretty much every time I got into a CT raid. It was also 100% exploiting the system because there is no way that was working as intended. They fixed the loophole. That, in general, is a good thing. CT raids are still naturally going to be the most common because they are the only ones required for the MSQ and also the lowest level ones. I can definitely say I see the higher level raids more often now, especially Endwalker ones.
I agree with needing more carrots, though. I personally tend to do all purple quests, so I don't understand people who never unlock the raids, but it seems like a large portion of them never do.