Reddit is the ideal place for bots, because there is a critical mass of anonymous posters who will bicker about topics they know nothing about–not to mention numerous other shameless cultural practices. It is may already be impossible for regular users to tell themselves apart from LLMs when engaged in typical Reddit discourse.
The problem is that infinite bicker produces low quality long term training data, terrible ad targeting data, and even worse conversions.
So unless they exclusively plan to sell rage engagement to film
Studios and political campaigns their market is going to be microscopic and terribly performing.
Businesses are going to need to be extra cautious about social media advertising spend in the era of LLMs. Personally, I think social networks are doomed, unless they can figure out how to lock things down. Will be difficult to do on a website known for anonymous posting.