> excuse my ignorance, but are there any major developer tools that don't support Windows?

The entire Ruby ecosystem has never had great Windows DX: the most recommended Windows builds of Ruby itself come from a "second-party" group because official upstream doesn't seem to care to bundle nice installers, there's a ton of papercuts on Windows in the base libraries even in APIs you don't think would be platform-dependent, and a large number of third-party libraries and apps just kind of invariantly assume that you will never try to use them on Windows.