CPU is pretty much irrelevant to GPU choice.
Personally I wouldn’t buy any recent intel CPU with the dishonesty and major flaws in their products as of late, but that’s up to you to decide - AMD’s most recent CPUs haven’t been amazing either, but don’t have hardware flaws at least.
Yep this is the real reason - Apple is so hostile towards developers and no support outside of proprietary Metal API it’s no surprise there are few games.