The best ones can literally write pretty good code, and explain any concept on the Internet to you that you ask them to. If you don't understand a specific thing about their explanation, they can add onto their explanation, and they can respond in the style you want (explain as if I'm ten, explain as if I'm an undergrad, etc).
I use it literally every day for work in a somewhat niche field. I don't really agree that it's a "parlor trick".
Sure, in the short term. I've switched to DDG and I'm not getting another Pixel when I need a new phone, and hoards of tech savvy people are feeling the same way. Dissatisfaction is causing them to lose customers and talent.
Eventually, they'll start feeling it in their bottom line. And by then it might be too late to change course.