You can beware of something and still read it. In general, I think it's pretty sound advice. It's less about turning your nose up at someone because they're not

You can beware of something and still read it. In general, I think it's pretty sound advice. It's less about turning your nose up at someone because they're not a professor at Harvard, and more about asking whether a group with ulterior motives has spun up an institute and is essentially self-publishing "research".