I don't get why people go through all these flaming hoops and hurdles to deal with MSVC when MinGW and MinGW-w64/MSYS2 are options. In the latter case you even still get (mostly complete) MSVC ABI-compatibility if you compile with clang.
If you're just a guy trying to compile a C application on Windows, and you end up on the mingw-w64 downloads page, it's not exactly smooth sailing: https://www.mingw-w64.org/downloads/
One of the options on that page is MSYS2, which I specifically listed above alongside MinGW-w64. And that download page is much smoother sailing: https://www.msys2.org/
There are other options on the MinGW-w64 page, but most of those are for cross-compiling from non-Windows operating systems (which conceivably could include something running on WSL these days), and of the Windows-host options, the only two with “many” packages are Cygwin and MSYS2 (though WinLibs looks interesting).
Supporting Windows without MinGW garbage is really really easy. Only supporting MinGW is saying “I don’t take this platform seriously so you should probably just ignore this project”.