> If Google search disappeared, I would still remember the names of several sites like Stack Overflow that are always at the top of the results, and I’d just go directly there.

I kind of agree with this, but Google is still, IMO, the best way to search these sites even when you know they exist because most of them have terrible local search.

Google searches with the site: tag are one of the few ways in which I find google search to be somewhat useful. Its pretty terrible these days at more generalized search due to their capitulation to SEO.