Not really, no. I have a better "prize" at my current employer, and I didn't have to go through that hazing ritual to get here. I'm not working on toy webapp garbage for social media, ads or the like, either. Even if that weren't the case my answer would remain the same: encouraging juvenile hazing ritual nonsense is not something I care to do.

Also, it takes a lot of time and effort outside of work to keep that undergrad CS trivia readily available for discussion in an interview. So it's not just "a couple of hours."

I’m not sure what you’re unhappy about. You’re fulfilled at your current job, not looking for a new one where this kind of interviewing happens, so what’s the problem at hand?

What I remember seeing on hacker news is people blogging about spending three to six months of their free time making sure they can answer every single question on leetcode, that's a lot different from a one time, one day interview.