The article's conclusion is exactly what you describe: that AI is bringing out latent predisposition toward psychosis through runaway feedback loops, that it's a bidirectional relationship where the chemicals influence thoughts and thoughts influence chemicals until we decide to call it psychosis.

I hate to be the 'you didn't read the article' guy but that line taken out of context is the exact opposite of my takeaway for the article as a whole. For anyone else who skims comments before clicking I would invite you to read the whole thing (or at least get past the poorly-worded intro) before drawing conclusions.