I’m not fond of “trophy mounts”, but I’ve worked many places as a naturalist and the taxidermy is a way to show folks the critters when the live ones are being shy. They are really good for showing people the relative sizes of various animals.
I know for a fact, though, that none of those animals were shot for sport, so I guess they don’t bother me as much. In fact, I’ve put at least three critters in the Nature Center freezer this year!