The difference is that expressing an opinion to another American abroad just means you cant sleep with them. It doesn't cause the federal or municipal police to track down your family for intimidation, or the private sector to galvanize excision of them either. For the individual that voiced there is just a small risk of being disassociated with the person you said something to, and if it was digital there is a small risk of getting fired or disassociated from institutions you were a part of. Very small risk. Maybe greater over the following decade, for something you said now.