The human brain works with pattern recognition. Regardless of whether I think that llms are great or not, right now they're vastly used to produce slop (I know it doesn't have to be the case), and because of the aforementioned pattern recognition we are largely being trained to recognize ai-generated content as slop.
There's really only one logical outcome:
If you're trying to sell something to me and you have a vibe-coded website, it doesn't matter how great your product is, I'll never even get to see it because it's slop-by-default.
And you don't even have to bring up AI at all to see how that's a bad idea. AI is flooding everything, isn't it a basic marketing strategy to differentiate yourself from the rest?