either conda is that old now or it seems a bit of a hyperbole.
haven used it personally, uv is quite fast and nice to work with at first. definitely nice if you work in a team that fully utilise its potential. however, there felt a lot of parallels with the node.js universe and switching to .venv / localized environments bloats up the system when you work with a boilerplate env that is the same across projects.
the additional files generated are also less human-readable compared to a requirements.txt and the workflow felt a bit more involved for individual users imho. it definitely has a place in the ecosystem, but personally don't find it ready to replace everything else yet.