This is the flip side of the coin, universal access to information and universal capability to generate information is a power that comes with a lot of responsibility and so far we are failing at that.
Similar things are happening here on HN, there are accounts whose sole purpose it seems to be to derail any normal conversation or to bait others in to crossing the rules so they can be eliminated resulting in a lower signal:noise ratio.
It's up to all of us to call this nonsense out and to relentlessly aim to stop it from spreading because at some level this is a fight with consequences reaching much further than just out little fora and comment sections of blogs. It is a war for mindshare of bogus ideas vs ideas with a basis in fact, the final prize is the votes of the gullible and to paralyze societies to be able to respond to crisis, man made or natural.
The funny thing is that as soon as you go down that rabbit hole far enough the conspiracy theories end up being peddled by the ones who are actually conspiring. See for instance pizzagate.