Pip doesn't resolve dependencies for you. On small projects that can be ok, but if you're working on something medium to large, or you're working on it with other people you can quickly get yourself into a sticky situation where your environment isn't easily reproducible.
Using uv means your project will have well defined dependencies.
The guy doesn't know what he's talking about as pip certainly has dependency resolution. Rather get your python or tech info from a non-flame-war infested thread full of anti-pip and anti-python folk.
Using uv means your project will have well defined dependencies.