What was "total decay"? Bunch of blog posts saying you should not use it? SPA was not a mistake - it is just that people don't understand they could do static

What was "total decay"? Bunch of blog posts saying you should not use it? SPA was not a mistake - it is just that people don't understand they could do static web page with interactivity sprinkled on it - it has use cases. I work on web dev and use bunch of "x was a mistake" tools and somehow deliver good quality software. Even if framework stops being actively developed it is plenty usable still. Unless there are of course serious security issues not fixable I could still stick with a framework.