This ("TSO") is actually an ARM standard however its only very latest ARM (v8.4-v8.7) and not many other CPU implementation currently. AWS Graviton 3 and maybe very latest phone SoCs if I understand correctly.
As far as I know, for "emulation" they are still using x86 memory model, which is making binary translation much simpler. I am not aware of any MCU/CPU, which would be able to just change its memory model / peripheral mapping as it pleases.
Obligatory Alan Kay quote: "People who are really serious about software should make their own hardware."