In social media, general consensus is owned by those that control the best and most bots to direct the conversation.
Unfortunately most people are too lazy/busy to seek out trusted information, and many if not most have no ability to understand if the answer they get should be trusted or not.
Isn't it owned by the owner of the social media platform? Do you think Zuckerberg, Musk, etc are neutral? There is an enormous amount of evidence otherwise.
If some bots proliferate, it's because the owners allow those bots to do so.
Detection doesn't have to be anywhere near perfect to be effective, though I expect that they can do it pretty well at this point. Remember they have visibility into far more than users do.
> we wouldn't need spam filters
? Spam filters rely on spam detection, and do a sufficient job.
I mean, why wouldn't they have the most bots?