Autonomous Proxies for Execration - spam bots whose entire purpose is flooding the internet with spam so as to make identifying anything true utterly impossible. If you can't differentiate between real and unreal information in online comments, then online comments stop being a significant factor in shaping public opinion. You need to abstract - identify reliable sources of information, individuals or institutions that do the work to collect and curate.

We're already seeing this as a side effect of the mishmash of influence operations on social media - with so many competing interests, mixed in with real trolls, outrage farmers, grifters, and the like, you literally cannot tell without extensive reputation vetting whether or not a source is legitimate. Even then, any suggestion that an account might be hacked or compromised, like a significant sudden deviation in style or tone or subject matter, you have to balance everything against a solid model of what's actually behind probably 80% or more of the "user" posts online.

There are a lot of aligned interests causing APEs to manifest - they're a mix of psyop style influence campaigns, some aimed at demoralization, others at outrage engagement, others at smears and astroturfing and even doing product placement and subtle advertisement. The net effect is chaos, so they might as well be APEs.