[tengwar2]

Settings - I preferred the rectilinear layout, but I don't see why making it linear makes it atrocious.

If you don't want SIP, it will take you a few minutes to reboot and switch it off permanently (or perhaps until the next OS upgrade). This is really the only one in the list which has to be "overcome", and personally I think that SIP enabled by default is the right choice. Anyone who needs SIP disabled can work out how to do that quickly - but it is years since I've had a reason to do it even temporarily, so I suspect the audience for this is small.

Multiple package managers and Python: that sounds like a problem caused by running multiple third party package managers.

If you want games, x86 or console is the preferred choice. Issue for some, decidely not for others. I'd much rather have the Mx processor than better games support.

iTunes - I can't comment, I don't use it.

iCloud - perfectly possible to run without any use of iCloud, and I did for many years. I use it for sync for couple of third party apps, and it's nice to have that as an available platform. It doesn't force its way in, and the apps that I use usually support other platforms as well.