Better images without Ibis?

This is almost exclusively for wildlife and sport photography.

I recently watched a video from someone saying that at shutter speeds faster than the inverse of the focal length, IBIS can actually be detrimental to image quality. Obviously, for slow shutter speeds, usually used in anything from landscape to portrait, IBIS is very helpful and can enable you to shoot at shutter speeds slower than usual. But in wildlife for example, people often use 1/2000 and much faster. Not only is this to fast for IBIS to react and do anything anyway, but it can lead to micro vibrations that actually lead to blurry images. I tested it a little bit and I think it's actually true. I'm kinda concerned that I'm bias and was wondering if anyone else is aware of this and has experience with it. It's also totally possible that I'm the only person in the world who didn't know about this already.