Easy for me to believe. They have to use some formula, and as soon as they change it, well, there's a massive industry dedicated to getting around it. If their algorithm is just "filter out what's useless", that's AGI.
Personally, I swapped to DuckDuckGo in 2019 and have been consistently happier but Bing or whatnot is probably equally valid at this point.
[0] When I search "postgres array_agg" on DDG - something I actually had to search for today - the Postgres documentation is the 6th hit (not even visible without scrolling down!), preceded by crap like https://archive.is/7JeSe. On Google it's the 2nd hit, also preceded by what seems like SEO spam.
In this case, DDG happens to have a bang shortcut for postgres which takes you directly to the search results on the PostgreSQL site if you query !postgres array_agg.
There's a surprisingly large number of these which end up making it more useful than the generic web search results page overall.
I actually switched to DDG cold-turkey and didn't use !g at all. Until I couldn't solve some problem and someone in my team said "it's the first result on google", I felt pretty stupid then. Since then I've given up and just automatically stick !g whenever I'm searching anything programming related.
Full text search isn't, but ranking the results is - and more importantly there is no objectively best ranking.
I doubt a million is going to make a dent in it. Content marketers are automatically generating this stuff, and Google has billions of users, many of which will occasionally invent a novel query.