The frequency is so high, and I am getting so burned out on checking comments to gauge how much everything is changing, that I've nearly given up subconsciously. Pretty close to just ignoring all images I see.
That does seem like a plausible nightmare scenario. That they are somehow set loose generating content, are rewarded for virality, and completely drown out content generated by humans. At that point they would exhibit accelerating non-sense. And this would be disruptive for all of society. Maybe.