Your argument is "they're designed to influence us" right?
Amazon reviews are paid influence. Reddit posts are paid influence. Everything everywhere you read online is paid influence. I'd rank LLMs between "people I personally trust" and "random people online."
In fairness to your point, I also find that Amazon reviews can no longer be trusted, and I really try to buy as little as possible from Amazon. Due to this, and other reasons, I find it quite difficult to have a good sense for whether I've bought something high quality, or if it'll be a piece of trash.
Since LLMs are trained on "random people online", why are they not of equal rank?