You should be thinking more along the lines of 10 years into the future, and how some 10 year old data will be used then.
Considering how much things have changed from the previous 10 years, it's not some schizo rambling tier to see what's the natural end point with all this. That end point being that surveillance state will only grow, internet data will become more centralized, and more permanent, and general respect for people's freedoms will deteriorate.
Shit like this is daily life in the UK already where people get jailed and put on watch lists for edgy jokes that were 100% fine a decade ago.
In my opinion it's quite willfully ignorant stance to have to just believe that shit won't get pretty bad in the internet freedom front, which will bite you in the ass at some point just to assume that shit you do and say on the internet today, cannot be used against you in the future, just because right now there aren't the cops banging on your door.
I for one don't have much faith that ex post facto laws would be things that will never happen when it comes to being a naughty boy on the internet.
When it comes to privacy shit and other nebulous "hate crime" shit, the last 20 years have been a massive shift, and there's no reason to assume that his development has stopped.