@Fiddle @aliss a. Well there is a documented history of Apple collecting probably personally identifiable telemetry data but whatever. I say apparently for the 2nd part, because I've never actually configured Mac os before, but it wouldn't surprise me if their UI design was total ass.
b. Yes it's arm and it's very powerful but you'd be retarded not to think they're probably practicing planned obsolescence and other bits of horseshit because it's apple and they have a history of harming older products to squeeze money out of people. Grounds for giving Cook a sloppy toppy.