Sigh, my game doesn't run on mac, but I like youtube ;) check out mine sometime.
No worries, I'm sure you can find other streamers with Windows
You can build for Mac with Godot, even if running from a windows machine
Really? I need to research it more, but on initial search, I didn't find it via google versus how easy I found making a .exe file.
When exporting, just export to Mac or Linux
Android and IPhone is also possible but more complex.