haha, thank you for summarising my thoughts on python package management... and very few people have mentioned poetry which is what we and most teams I know use.
Rust programmers seem to be lousy with ECS frameworks that never get used in any games but seem hell bent on proving that rust is the best language for game programming, and python programmers seem to break out in a case of "packaging tool building". I don't know what causes this. Perhaps some sort of pathological thinking that "I can do better"?
I really like python (and I like rust too), but if I were to take an honest look at the python packaging and environment ecosystem, I'd think that I'm being trolled. I lived through the age of setuptools.py, and while it was not good, at least there was only one approach really. Now we have a bazillion approaches that are all good, and zero consensus on what to use. Each individual tool is much better than what we had before, but the landscape has become so fractured that as a whole it's a complete shitshow.
Therefore, I think it’s because so many Rust programmers were C++ programmers they would like to move another major stronghold over.
Pure speculation though.
Happily, I haven't yet been afflicted by a strong urge to build python packaging tools and inshallah I will escape this dreadful fate.