> Just as lawyers regularly point out, their work done outside of a professional context is no different than work done by anyone else.

This is not at all what "I'm not your lawyer" means—that's a disclaimer to say that they're not taking legal liability for their advice to you because you're not paying them. They're still far more qualified than I am to talk about law in the abstract and dismissing that as "appeal to authority" is a false appeal to egalitarianism.