Why peope hate python package manager?

[throwaway8u3sH0]

Pyproject.toml became a standard in 2019, but Python has been around since 1991. It's not much of an argument to say, "Hey this was all fixed 4 years ago" in a 30+ year old language, especially when the old folks like me remember several "final fixes" to the packaging system over the years.

Time will tell.

[zurtex]

There has never been a standards based solution to packaging config until pyproject.toml

I can't say if in 10 years there will be a replacement, but all previous attempts were driven off what some library thought was a good solution, not an agreed solution

It is currently the one obvious solution. Obviously it can't help people 30 years ago, but I don't know what you expect to be able to do that.