At first I did not want to question the credentials of the author, he calls himself an "elite developer" and I assume is is pretty good at HTML/CSS and the software development process (gathering requirements etc.) in general.
I understand he feels left out, so many job and gig postings now requiring in-depth knowledge of declarative frameworks such as React or Angular, something he has skipped over on purpose, on principle, and now feels more and more left out.
However, having checked out this guys website https://beaubeauchamp.com/ I now understand basically what this person does is create static landing-page-style websites.
I understand that plain HTML/CSS might be the best fit for that.
But writing a full-fledged interactive application, something that would have been released as a desktop app a few years ago, is simply a different league.
In addition, even regarding plain HTML/CSS landing pages, I don't understand how this person can call himself "elite":
I got annoyed by the "fake smooth scroll" feature on his website and low contrast of various UI elements compared to the background.
And the public portfolio was mediocre at best. I mean sure, you could definitely find clients that would still be happy with the Web 2.0 style design and functionality (e.g. https://harleyaustin.com/ simply one large HTML page with the top navbar making you scroll to the position on the page), but I wouldn't exactly call this "elite frontend development".
I guess what this person is good at is finding real-economy clients (book authors, travel companies, etc.) and get well-paid gigs (I assume).
And this type of job still works, even with React/Angular creating entire new markets and a lot of hype around them.
I just don't think this person is the best source for state of the art web application development.