Interesting, I've seen much better results on DDG. Most recently was the search: `site:feeds.bbci.co.uk inurl:rss.xml` which works on DDG but gives zero results on Google. As far as I can tell, Google just decided not to index these.
I miss when Google was like a grep for the entire visible Internet. Now it tries to second-guess my search and direct me to a bunch of sites which all have identical information that isn't what I'm looking for.
We thought blogspam was bad, at least it was easy to ignore. It's hard to find authoritative sources for a number of topics, worryingly health advice is one of them.
Google shows an AI overview and "people also ask" with zero search results above the fold. If I page down I see a single search result for clevelandclinic.org, followed by youtube videos and image search results. The next page has a single search result from rush.edu and then "discussions and forums" which has Mayo Clinic and Quora.
DDG also starts with the AI overview (although I disable that) and has two results from webmd.com with deep links to multiple pages on the site, all above the fold. Then the same clevelandclinic.org result as Google but again, adding deep links to other related pages.
I can't comment on the quality of webmd, clevelandclinic, or rush, but Google pushing the user to youtube and quora for medical advise seems worrying.