I believe you are correct: https://x.com/awesomekling/status/1822236888188498031

Has anyone here ever used switf ouside the apple ecosystem? If so, how is the experience going?

I think in swift like C# and Microsoft. Yeah, you can and I do run a lot of C# code in other platforms. But if you really wanna use everything it has to offer, it needs to be in windows, at least in the development stages.