“Maybe you had no success bc you’re an incompetent Doctor. You know that there are quite a few quacks out there.”
Not only is this a rude statement, but also ridiculous by calling someone with a doctor’s degree in medicine a quack, assuming ubiquitin is a doctor.
if one is confident about their position, they do not need to resort to shaming and name-calling, they can focus on the discussion at hand. There will always be people that are otherwise smart and knowledgeable that will disagree.