Naive take. https://gwern.net/holy-war counsels that, in fact, becoming the One True Package Manager for a very popular programming language is an extremely valuable thing to aim towards. This is even outside of the fact that `uv` is backed by a profit-seeking company (cf https://astral.sh/about). I'm all for people choosing what works best for them, but I'm also staunchly pro-arguing over it.
>Which is why when random people start acting like it’s important, you have to wonder why it’s important to them.
I don't use uv because I don't currently trust that it will be maintained on the timescales I care about. I stick with pip and venv, because I expect they will still be around 10 years from now, because they have much deeper pools of interested people to draw contributors and maintainers from, because - wait for it - they are really popular. Your theory about random people being corporate shills for anything they keep an eye on the popularity of can be explained much more parsimoniously like that.