The Nintendo Switch has an ARM64 CPU, which means the biggest part of porting to that CPU is now done. Does it mean we can expect an Apple Silicon mac build some time soon(ish)?
I emailed them last week about Apple Silicon and they told me to watch for today's blog post. I interpret that to mean that, yes - this means they can more easily do that.
Like most macOS games, it most likely is an x86-64 game that Apple's x86-64 emulator does an admirable job of emulating. As far as I can tell, very few Mac games, even new ones, are proper ARM builds currently.