It is hard to take seriously any language which didn't view "Windows support outside WSL2" as something to get sorted before 1.0
Is this the requirement of the OP though? I believe this is better than having nothing working on Windows and Crystal isn't difficult to master.
I'm not sure you know what "Windows support with WSL2" means. It means no Windows support, only Linux support, except Microsoft figured out how to put Linux software on Windows so "nothing working on Windows" is no longer a possible baseline.