Yes, I agree with what @rockedge says above.
I am not at all an expert at website development myself, but I have dabbled with it at different times (and using different mechanisms) over the years. I experimented with html/css for a while to create flexible, what are commonly referred to as fluid pages (where columns and so on automatically resize depending on the device view screen). Around that same time, I also set up a NGINX-based site for business purposes, and used (admittedly simple) server-side php, for the very reason that provided the ability to change pages in a dynamic way without having to re-upload site pages.
Having said the above, the once probably considered inferior 'static' designed websites (which often use client side javascript-based technologies, but not server-side dynamic) can nowadays often provide excellent, very fast loading websites. Whilst changes to the presentation involved on these sites involves the process: page(s) modification, followed by re-upload. Some great static site generators have been created that automate that whole upload process, using the likes of github to store the website contents. So nowadays it isn't a matter of which methodology is best, but rather it depends what the required characteristics of the final website are. It can often come down to a matter of technology preference.
I know nothing about the job statistics related to web development, so I can only accept the information your links provide that suggest such work is in huge demand and expected to remain so in the future. There are many reasons why that is likely to remain true. Like all types of coding, new research ideas tend to keep the individual developer important in the never-stands-still scheme of technological development. I do 'wonder', however, about the effect the recently much discussed huge strides in AI developments will have on the likes of web development and coding more generally. I suspect, however, they will work together in a collaborative manner for a long time, rather than AI removing the need for programmers of any type altogether. Some career types will undoubtedly become under threat, I'm sure though, such as in the fields of accounting, and lawyers or course... AI will remove the need for them altogether I hope.