I shrunk my macOS partition down all the way to 64GB, the gave the rest to Asahi Linux. macOS runs fine for me with ~52GB of 64 used, though I noticed that Disk Utility didn't load for a whole minute, but maybe that's a coincidence?
Tell me how well it runs for you if you use it with <100GB of space.
Tell me how well it runs for you if you use it with <100GB of space.