When I said "endless shitposting", I was referring to tons of actual tiktok videos of such behavior flooding the feed if you look up the relevant tags. I naturally got recommended so many of those videos, i had to spend quite a bit of time just teaching the algorithm that I dont want that garbage on my tiktok FYP.
From what I have seen, few people are making these videos every day, or even more often than a constant number of times. They post one or two, it gets shit on, and they're done.
If a significant portion of big tech workers were spending O(n) time (n is days on the job) on this, I think you'd have a point, but I don't see either as true. An individual might spend 2-3 hours one time shooting and editing a "day in the life of a Hooli engineer" video. And I'd wager that people creating this videos are a tiny minority among their colleagues.
To be clear, these videos irritate me too. The worst that I've seen isn't even from "spoiled tech workers", though, it's been from trust fund kids showing the "day in the life of a New Yorker" or whatever, without even a pretense of having to work. Those are totally out of touch and misrepresentative.