I run a STEM company library these days, and other than some student interns, the folks I serve all have PhD's; though the bulk of them are under age 30. Surveys I've done tell me that my population thinks that any search that takes more than 3 clicks is too cumbersome.
That's actually a huge part of the issue; the clicks. Social media posts take only one, whereas a website search normally takes at least 2, and probably 4. Clicks are more difficult to do on a phone screen, which feeds this frustration. (Don't ask me why 4-5 clicks is supposedly harder than typing out a post; I can only report what I've encountered. They complain about clicking down levels, but not about filling in search blanks.) Trouble is, with Google's algorithms, the most reliable results usually do not turn up on the first or even second page; you usually need to click through to the third to get a solid result, but few people bother.
It's actually quite easy to get past Google's result rankings if you know how to properly structure a search, but very few people bother to learn the simple tricks. The biggest issue that I encounter is a tendency to give up too easily, which usually stems from arrogance; in my profession we like to say that the user assumption is that if you cannot find it in less than 3 minutes, then it must not exist; when the truth is that it's more likely that a) you're looking in the wrong place or with the wrong search terms, or b) what you're looking for is behind a paywall. (Paywalls are another reason why people don't want to bother to search; some assume that they are likely to run into one on any non-social site. That's a big reason why so many people fall for online misinformation, but I digress ...)
I made darn sure that my own kids are efficient and thorough searchers, but it's a skill that I find most schools really don't teach very well now. They teach kids how to code, but not how to search, which, IMO, is half-baked; if you can't search for spit, then you're not going to be very good at UI design.