5.5, in my opinion, is a very corporate edition of the game. There wasn't any actual change or reason for a new edition other than Hasbro wanted D&DBeyond and the money it got, and the way to do that was make a "new edition". But people liked and were playing 5e so, make a backwards compatible system that's totally the same thing.

The 2024 version of D&D, in my eyes, doesn't fix any of the actual issues with the game. They change some wording and change some abilities but none of the core issues are dealt with. So to me, it's a pointless cash grab.