2. Because Linus likes convenience of having Greg as maintainer too much.
3. Forking kernel won't help - just ask Android guys. Forking full os will and devuan did just that.
Problem is hyperscalers are running the show and they like systemd for programmability - no one cares about stability much: so one container out of 1000 will hang, so what?
And other users? One that actually got Linux there it is now? Fought to get it in corporate environment? No one gives a shit about them.