Bullshit according to who (which is my point)?
> along the lines of bill gates inserting microchips in your brain or 5G infecting you with a virus, or you suffocating from wearing a mask
There is some of this, yes. But then there are also questions regarding financial motives behind vaccines, and the unusual manner in which statistics are reported, and why certain portions of reality shall not be discussed, and so forth and so on. Lots of people assert that these ideas are also "bullshit", but if you ask for evidence substantiating that assertion, they often behave as if the notion that assertions should require evidence is absurd (while simultaneously criticizing conspiracy theorists for asserting things without evidence).
> It's not like we're talking about any sophisticated philosophizing here
I don't think philosophers would agree that epistemology is simple - that it often seems to invoke such strong emotions in people suggests that it is anything but. It has a dependency on human cognition, which is fairly well known to be a less than perfect platform in many ways.
> the real danger from misinformation on the internet at the moment is the lowest of lowbrow garbage spread at extremely high velocity at virtually no cost.
This is surely "a" danger, but whether it is "the" (main) danger is necessarily speculative, as it has a dependency on the future, which is unknown.