Don’t know if the community is biased which always sounds kind of ideological…
Imo its just a better experience developing on Linux. As mentioned its faster, more flexible offers more dev tools etc. And I think window manager and stuff like that add to this experience.
The tiling-scrolling wm, for example, I use lets me work faster than with every mouse-driven clicki DE Ive tried so far (be it Linux or Windows).
But all this stuff ist very subjective. In the end its imprtant thay it feels right for yourself. And that has never been the case for me, personally, with Windows.