I get where you're coming from but the whole point of getting a Mac is "it just works". I just don't have the time to deal with a Hackintosh. Also from past experience, there's a reason why they sunset older machines. At some point the OS updates are just no longer compatible with the old hardware. The Mojave patch notes that you linked further confirms this.

Another issue is that Windows 10 is now at the point of working decently and it has Ubuntu baked in. Apple also has iCloud sync software for it. I will miss Mac Apps, but given economics, most people just crank out electron apps anyways.

I give up on Apple computers. imo There's no viable option for iPhone or iPad though, so I'll still will be with Apple on some level.