Carbon was released in 2000 and final release was in 2019. Cocoa, correct me if I'm wrong, was released in 2005. That's 14 years to learn it. Not like you knew Carbon when Cocoa came out because there were like 10 developers making Mac OS X apps before 2007.

y'all are slow learners if that's an issue for you, but React doing major breaking changes at least once a year is totally fine.