It happens in the comments of places such as this very site. Often for the lulz, occasionally mental illness.

From there it repeats the pattern but with gullible added to the mix.

Silly rabbit!
Spreading their wealth of knowledge, as all humanoids are programmed to do.

Some do it for the clicks, some are genuinely insane. The former attracts the latter and eventually it becomes a feedback loop.

There are lots of genuinely interesting mysteries, some of which suggest fantastic things, but this kind of stuff is just taking all the fantastic parts and mushing them together without caring about, well, anything really.