absolutely not true btw - the largest use-case for stable-coins atm are people evading capital controls in emerging markets, including China, India, Nigeria, and similar, and in many latin American countries.
Where do they need tumblers for personal non industrial scale operations? I know ppl in South America who use crypto to save on dollar conversion fees when sending money abroad to family. No washing needed.
Where on the planet an oppressive gov somehow has the resources to track insignificant personal crypto amounts from ordinary people instead of just banning crypto? Check if crypto fuels this oppression machine in much larger amounts in the first place?