> I think 2 languages are enough, we don't need a 3rd one that nobody asked for.

Look at the number of stars ruff and uv got on github. That's a meteoric rise. So they were validated with ruff, and continued with uv, this we can call "was asked for".

> I'm against it creeping into an existing eco-system for no reason.

It's not no reason. A lot of other things have been tried. It's for big reasons: Good performance, and secondly independence from Python is a feature. When your python managing tool does not depend on Python itself, it simplifies some things.