Yes, of course. A big chunk of my time at various previous companies was removing usage of such things when not necessary. It's also not "a lot" of atomic varia

Yes, of course. A big chunk of my time at various previous companies was removing usage of such things when not necessary. It's also not "a lot" of atomic variable access but you do need a strong fence to provide the correct semantics (so it is some). To what degree "a lot" or "some" is depends obviously on what you're doing.