Yes, i'm having to go several pages deep and even then not finding anything relevant, I've started to use other search engines and reddit to actually find useful info.
Could something as innocent as training a new neural net or testing a buggy version of the algorithm on subsets of users. But it could also be as sinister as driving traffic to those in bed with Google, silencing opposition, or effectively whitewashing the entire internet...
It's my opinion that a large portion of the websites on the front page of any search (quora and pinboard anyone) are completely bought and paid for.
They are maximising ad revenue, not the search relevance/usefulness.
Stopped using "google" as a verb a long, long time ago, in favor of just saying "search". I don't think that's ever confused anyone.