Earlier quoted context omitted.
> This technology will kill all digital information exchange. This is a bit hyperbolic. We have strong encryption like PGP for media like email (although I suppose getting people to use it is the issue), and there will be plenty of incentive to develop other tech to counter the problems you mentioned.
PGP tells you you're talking to an entity which could set up PGP, it doesn't help you determine if the account ben_w is merely one of many government sock puppet accounts trying to push a specific meme into the minds of the general population. Knowing who to trust… was already hard-to-impossible with just normal social media; cheap LLMs will definitely make this harder, as more groups will be able to afford what was…
PGP's web of trust never worked because it was always too small to cover enough humans and take advantage of the low degree of overall connectivity.