They overkilled it.
2024 classes and 2014 classes were supposed to be playable together. Technically you can, but due to the power creep you're nerfing yourself 9 times out of 10 if you choose the 2014 option.
Monks are great in 2014 and IMO never needed an upgrade. Now they are considered OP by many players who even like more OP-style games.
Weapon masteries added another level of complexity which some people have been complaining slow things down from the beginning.
It wasn't that they didn't make the attempt, which hey, yes, great, they did, but they went about it the wrong way
for some people, and those are the one who'll complain about it.
Exactly. A lot of people do like it, but a number of people don't. Fortunately, nothing is stopping them (including myself) from just sticking with 2014 material. It does, however, mean we aren't likely to get
new material for our games from WotC--and that is a problem IMO.
It sucks for myself and others like me, but such is life. Hey, I've been dealing with it for over two decades now.