I've played much more graphically complex games on my M1 MacBook Pro with 16GB ram and _not_ had that issue. I think the makers/porters of Inscryption are to blame for your issue, not Apple.
I agree with the other guy. Just plugging in my M1 Max Macbook to an external 4k monitor makes it hot to touch. I don't what they are doing with the cooling on this laptop.
My m4 macbook had a weird flashing external monitor issue. One that eventually led to my monitor appearing to break. But have no fear, it's a known problem since m1 times and not a priority to fix.
Do you mean plugging a 4k monitor in while gaming, or just in general? If just in general, something's going very wrong since I _only_ use my M1 (not m1 max, not m1 pro) macbook plugged into a 4k monitor (except when traveling), and it's never hot unless I'm playing a game that's really pushing the processor. For most games it barely even gets warm. And for normal web-browsing and netflix-watching it's cool to the touch.