> an international group that doesn't trust US based corporations with their personal data

I don't think it is actually possible to exist in the western (and sometimes nonwestern) world without US based corporations having your personal data.

For starters, this fictive "international group" would have to essentially have no internet footprint. Its members would also have to never engage with international groups who themselves have US based corporations as third parties. It's just not realistically doable. Bitcoin has nothing to do with it.