I’ll be one to give as much of a real answer as I can.
I am one that really doesn’t like the trend, but I can see where it comes from. I did the equitation for a long time and still have a few trainer’s voices in my head anytime I feel something slip. But, when I ride a hunter, my thought is always “let him jump, big release, off his back”. In order to ensure you stay very far off the horses back during the landing, you tend to duck a little bit more, especially on a really hard jump. If rode hunters every single day, I can see how that would develop into an over-dramatized release.