WSL... filesystem? Either way, I firmly disagree, there are not many cases where I've been unable to do dev work on WSL. Only when I need particularly weird / specific networking or hardware (ie. GPU, which might work now) have I had significant problems.
File IO from windows into the wsl disk and vice-versa is significantly slower so it's not great to, for example, use wsl git on a project living under your windows user directory or visual studio on a directory under your wsl home.
I think they're just using FUSE to make it work but don't quote me on that part.
Sure, not doubting that, I'm also a developer, and use Windows. But not because I want to, which I feel is a pretty common position to be in, at least around me.
The motivation you had to move to Linux evaporated when you started regularly using Linux, and it's important to consider Windows developers, for whom it's now easy to use Linux without completely moving to Linux.