If you don't need it that's fine, no one is stopping you from using PyPI and uv instead. But for some that is not a replacement.
And yes, some things about conda(-forge) could be described as bloated. I particularly dislike the convoluted packaging process.
It is always tradeoffs and deciding based on your own use cases. E.g. if you want to distribute tested packages to users of your software then both conda-forge and PyPI are ill-suited for you. They (and most other package managers) do install-time dependency resolution, so the installation cannot be guaranteed to be tested as working at all. Some package managers do that better, so is conda-forge and PyPI obsolete now?