We don’t want to believe what we deeply understand: nothing is really deleted, and someone, somewhere can (and probably will) use that record against us.
It’s possible that someone and somewhere will be a Customs and Border Protection agent at a US airport, as by now we’ve all heard a story of how has prevented a few unlucky souls from entering the USA – after spending hours or days in a holding cell – because of some post or other activity that someone decided made them unfit to cross the border.
Now that’s it’s happening, what can we do?
Probably also depends on what country you’re coming in from. I have virtually no social media presence myself but when I came back to the US I didn’t even have to speak to CBP, they had an automated facial scanning system and just required you to be holding your passport. This is as a citizen, I’m sure the process for foreigners is less lax.