and the power of short simple repetition until lies become truth.

This is also true with long diatribes that are packed with bullshit but that drain your time to debunk.

This is the type that I feel is common on lemmy.

If you dive into them, eventually youll find the ideas all fall apart, the sources are weird, biased and funded by groups you wouldn't take seriously etc etc, but at that point, you are exhausted, and you are probably not going to put in nearly as much effort into arguing as their prepared copypasta "literature" collections, nor as nice.

I would think this was a tactic to make a casual observer think "well that second person isn't as reasonable as the first one who posted a lot of information" if they didn't check the info themselves, but these posts are often so 0-100 hostile in attitude out of the gate, I can only think they serve to simply tire people out, and run obstruction.