I remember when the SEO nightmare started, it looked like an innocent intelectual investigation exercise like this.
The worse part is a deluge of stupid boomer fanfic (The ones about ungrateful kids, ungrateful employers that fired someone who secretly was a load-bearing (ha!) element for a contract, or HOA drama), self-help stuff, and red-pill incel fanfics.
For example we just added code review here: https://armature.tech/leaderboards#app/code-review -> See my comment here about how much coding agents choose themselves. I don't expect people to let this last forever for instance, otherwise it's worrying for literally any software out there.