What makes a good convincing conspiracy theory is that has elements of truth. If you really get in to the groups of people who actually discuss and propagate this theory, they think this stuff is more coordinated, wide spread, and competent than it actually is.
I would be careful treating “dead internet theory” as plausible until you actually dig in to the stuff proponents of it believe, you’ll quickly realize they go beyond “there are a lot of bots on the internet, shitty boiler plate content, and astroturfing campaigns” to color revolution theory, NWO theory, and other Lyndon LaRouche esque stuff. Like it’s a deep fucking rabbit hole that you would not suspect from the surface level ideas that are often presented when talking about it.
Issue is that people like to categorise other people into groups, and so even if you only believe the plausible or even provably true parts of it, if you try and propagate it you'll lose credibility in a lot of people's eyes
Denialism is pluripotent. Give people a contrarian thing that makes them feel smarter than everyone else, and they'll fall for any old bullshit eventually.
The loudest peddlers of bullshit are the same bigots as always. Fascism spreads exclusively through emotional manipulation.
I like to imagine that long after the untimely but well deserved demise of the human race our legacy will continue in the form of solar powered sexbots catfishing each other for millennia upon millennia until the Sun explodes.
Nah, all of the bots and AI systems and pretty much the rest of the internet is built out of the software equivalent of duct tape and offcuts of scrap wood. If humanity disappeared the whole thing will fall over inside of 3 months. The only reason any of it works at all is noone is really actively trying to properly break it