> Get any Truman show vibes?
No.
It's an interesting thought experiment but it changes nothing. Not for me, anyway. Commenting on these threads is an activity that I do for my own entertainment and "mental flexing." If it turns out that I'm not talking to real people then it doesn't make much of a difference because I don't actually perceive these messages as anything other than pixels on a screen anyway.
I hope that doesn't sound "cold" but I come from a generation that was born before the Internet existed. I was about 10 years-old when we got our first modem-equipped computer and that was still early for most people (1992). Having those experiences early on with "early world-wide-web" meant that even though you knew you were talking to "real people" ... there was no real time chat, or video streaming or voice-over-ip etc. ... and so everyone's messages to each other were always pure text all of the time. And no one dared ever give their real name or identity online. You had no idea who you were talking to. So the web forced you to think of communication as just text between anonymous entities. I never got over that mental model, personally. Maybe a little bit with close friends and family on Facebook. But I'm not much of a social media user. When it comes to twitter and forums ... you all might as well be AI bots anyway. Makes no difference to me!
EDIT (addendum):
It's interesting, the more I think about your comment and my response the more I realize that it is THE INTERNET, still, that has fundamentally changed the nature of what it means to be human and to relate to others.
If you see interactions between people online as "real", meaningful human interactions, no different than relating to people in the physical / offline world, then it must be somewhat disturbing to think that you might be caught up in a "meaningful" relationship with someone who is "faking it." But that reminds me of romance scams.
For 18 years I ran a high traffic adult website and I would have men email me from time to time to share their stories about scammers luring them into relationships using doctored video, images and false identities etc. These men got completely wrapped up in the fantasy that they were being sold and it cost many of them their life savings before they finally realized it was a lie. I felt awful for them and quite sympathetic but at the same time wondered how lonely I would personally have to be to lose my skepticism of what I was being told if an attractive young woman were to express an interest in me out of nowhere.
ML will undoubtedly be used by scammers and ne'er-do-wells as a way to do their misdeeds more efficiently. But I think that the remedy is education. I miss the days when people were a bit weary of what they did, said or uploaded to the interwebs. I don't see the problem with trusting what you read online a little bit less.