I fondly remember reading a comment in /r/conspiracy on a post claiming a geologic seismic weapon brought down the towers.
It just tore into the claims, citing all the reasons this was preposterous bordering on batshit crazy.
And then it said "and your theory doesn't address the thermite residue" going on to reiterate their wild theory.
Was very much a "don't name your gods" moment that summed up the sub - a lot of people in agreement that the truth was out there, but bitterly divided as to what it might actually be.
As long as they only focused on generic memes of "do your own research" and "you aren't being told the truth" they were all on the same page. But as soon as they started naming their own truths, it was every theorist for themselves.