Most tech companies today work against your interests, to one degree or another -- even the companies that run expensive warm-fuzzy PR campaigns -- so try to minimize how much you have to trust any of them.
I can agree that interests of companies and individuals are not necessarily aligned and it's good advice to take this into consideration. I'm not sure it's necessary to add actual bad intentions from the part of all tech companies. In fact, I think it spoils most of what's good about the advice.