I keep trying to find things like “making waffles from sour dough discard” and all the sites are the same: long meandering paragraphs full of links to other things on the site with dubious instructions.
Considering at this point I can pretty much identify the type of site by looking at it; are there good extensions or search engines which might remove them from search results?
I don’t think you’re going back far enough. As others have pointed out, the problem existed due to seo stuff long before any LLM would see common usage, even in advertising rat races. Copy-pasted-extended descriptions became a problem around 2015, in my filtering journey. That’s where I see real blogs (and just simple websites) start to be the majority of search results.