The more technical side of the Mac user base would probably jump ship if a polished, open macOS analogue appeared. There's been a lot of discontent with changes dating as far back as 10.7 Lion, and has been gradually mounting more rapidly since 10.10 Yosemite and accelerating greatly with 13 Ventura through 26 Tahoe.
There's substantial demand for a spiritual successor to OS X 10.4/10.6/10.9 that isn't being filled.
There's substantial demand for a spiritual successor to OS X 10.4/10.6/10.9 that isn't being filled.