I can easily believe that's part of it, but not so much what we say as what we do, what we consume.
You bring up some great points. We already have hiring agents looking up applicants social media posts. Your search history is already easily obtainable but having everything attached to your real name is awful. This could just get folded in to someone's background check. We'd have personal bias making decisions instead of what objectively matters.
I used to work at a state funded forensic mental hospital. My background is psyche and sociology. I was a contracted worker, but most were govt. employees. Once hired, my co-workers and bosses flooded me with friend requests. I denied all of them. They're not friends, none of them became friends. I'm not that person. I'[m here for the patients and the money and the student loan forgiveness. I got a lecture from two of my bosses--my boss and their boss. These are administrative people who tried to lecture
me on how refusing to connect with colleagues 'says something about me' — that I'm not a team player, that I'm closed off, and threw in some pseudo-psyche derived from an article they only read the headline for. As if keeping my personal life separate from my professional one was a red flag instead of a reasonable boundary.
I can only imagine how things would have gone differently had they could see everything. I'd be too deranged to hire. Hell, it might have blocked my licensing. The hypocrisy within it all only further infuriates, because you
know the people making decisions about you aren't so different.