How can you say Google search is "totally irrelevant" and follow that with "I'm aware that most people still use it"?
When Google search first appeared it was miles ahead of the pack. There was no alternative worth using. They had a true monopoly insofar as nobody was able to compete.
Nowadays, if Google Search were to disappear, I would hardly notice. That would have been unthinkable 20 years ago. The alternatives to Google got better, and Google itself got a lot worse.
They still have the numbers but they don't have the product anymore and they're just juicing it until the end.