Outside of his right to repair work I find most anything Rossmann gets involved in is questionable. He is a good example of someone that got popular for something they cared about and knew something about, then mistakenly got the idea that success meant they had valid opinions on other things they know nothing about.
Rossmann knows about laptop hardware repair and running a small business. But that doesn’t necessarily translate into being a knowledgeable voice in the software dev or large scale digital advertising industries.
He is just a mouthpiece for the company behind Greyjay, nothing more.