You are probably right: even as I was writing it, I was thinking "Isn't ARM like this too?". A big difference is that recent version of the ARM ISAs have added

You are probably right: even as I was writing it, I was thinking "Isn't ARM like this too?". A big difference is that recent version of the ARM ISAs have added "acquire" and "release" loads and stores, so they will perform well with those semantics in the future (and ARM chips generally pick up the new ISAs quickly).