Hiding accessibility features from users who don't need them seems to be a non-existent feature in HTML. I've found lots of tutorials about hiding things from users that *use* accessibility features, but not the other way around.
For instance, I need to include a very detailed description of an image, that includes more than just simple text (it's tabulated data).
Perhaps, instead of using accessibility features, include a link to an appendix section with longer descriptions?