I usually see this as a purposeful choice of open source teams and developers. It's not like you CAN'T create an easy and thorough build process for Windows machines. Even if you ignore turning it into a VS solution, batch files can do the job, but nobody is willing to do the extra work because they personally don't use Windows so it won't benefit them.

> For most open source stuff, Windows has less support...because it usually requires tweaks.

That's not true at all. The Macintosh OS easily requires more tweaks than Windows to do things like Python, Go, Node.js and Rust.

Everything is better on Windows.