I see it fairly regularly. Not only that I can even link up a video describing a bunch of ways it is often doneHave you actually seen players bullying a DM (such that the DM has to bend to what they want)?
I really haven't. I've certainly seen DMs bullying players (well I used to see it, before getting a great, fun, steady group - a long time ago). But I haven't seen players bullying a DM into doing much of anything.