If you are a competent engineer already why do you need to create self demeaning clickbait content on YouTube? Narcissism? I aggressively block any such content, because if you click on any of it, you easily get sent down the YouTube spiral of crap.

One can be multiple things. That you find it demeaning is your personal opinion and frankly is more a reflection on yourself. There are many like Casey Muratori that are competent engineers as well as YouTubers.