A world where you never know if you're talking to another human being unless you're right in front of them.
You wouldn't be able to trust that it's your own mother on the phone. Every thread and chat may just be you talking to yourself through a pile of code. And god knows who that code's talking to. Photo, video evidence in court? Can't prove it's not real, your honor.
An artificial world. Everyone sequestered away into their own bespoke realities, separated by unbreakable walls of uncertainty.
The rudimentary twitter bots you're imagining were the forefront of tech over 60 years ago, not 6. 'Eliza' was an NLP bot that was developed on computers in the 1960s that was more advanced than most of those twitter bots, back then people were also asking just how many more days until the robo-apocalypse. This is an insanely complex field, and we've made an advancement and it looks very pretty, but it still has fundamental flaws.
So, we've gone from that to this AI in 60 years. Thus, if we're comparing those leaps as roughly equivalent, by a long time, we could easily be looking at another 50 years.
Also Eliza for the curious: https://www.masswerk.at/elizabot/