i think the main problem was that people didn't believe that pip was broken, or didn't think there was any value in a 100% correct package manager over a 97% correct package manager (e.g. misread "worse is better")
I had the problem basically understood in 2018 and I am still pissed that everybody wanted to keep taking their chances with pip just like they like to gamble with agent coders today.
Now that people know a decent package manager is possible in Python I think there is going to be no problem getting people to maintain one.
Idk how anyone could sustain the impression that pip was not broken unless they had basically never used anything else (including Linux package managers) long enough to have even a basic understanding of it.
And that's a big part of what's so frustrating about Python generally: it seems to be a language used by lots of people who've never used anything else and have an attitude like "why would I ever try anything else"?
Python has a culture where nominal values of user-friendliness, pragmatism, and simplicity often turn into plain old philistinism.