When I explore or consider alternatives, I don't think of or ask myself about design principles, but consider and weigh what could and would make sense where I am.
More than principles, the guiding goal is Maintainability - Readability, Graspability, Consistency, Correctness, Robustness. Weighted against constraints.
I guess separation of concerns is a big one I use implicitly. Like many others.

They mention examples of such frameworks and technologies; listing them and adding hyperlinks: HTMX, Qwik, Astro, Remix, SvelteKit
I've known HTMLX, which I wanted to make use of and try out for a while now. Remix looks interesting [to me] too.