Isn't "information diet" perfect usage here? The medical doctor's information diet probably consists of different information than the tech enthusiast's, or the STEM PhD's, and the journalist's information diet may consist of more politics and contemporary events. I thought it was a pretty creative and apt word choice

I don't think the person you reply to conflates "information diet" with "tech". They are just saying that their information diet consists for a large part of tech news, and other people have other information diets that don't contain that much tech news..