I use an AR platform for hunting quite often, not all the time, but most. I use 5.56 on small game, no issue i.e. rabbits, coyote, javelina. I use my .308 AR platform for elk and deer. I see zero issue using a semi auto to hunt with. The type of semi auto means absolutely nothing as far as I'm concerned, so long as the round is adequate for the animal being hunted, the rifle is reliable, accurate, etc. I know I print groups just as tight with my AR platform as I do with my bolt guns.
I also run a suppressor on my rifles. No I have not seen too many "shoot 'em up" movies, and I'm not under 30. But I have spent my entire career using AR platforms, often choosing them over the bolt guns we could have used. I like them, find them to be accurate, reliable, ergonomic, modular (changing stocks, grips, etc. as I change my preference), etc. I also know that hearing loss is real, and why not use something I have access to that also benefits others (hikers and hunters not having as loud a sound carrying)? Since it does not make me any more effective at hunting, as it is actually a hindrance, heavier, bulkier, etc. It's all personal preference, why use a bolt gun over a musket? Why use a lever action instead of a bow? But I have also used a Hawken rifle to hunt, bolt actions, lever actions, a bow, etc.
The issue of "spraying bullets everywhere" or "you don't need that much gun to hunt" is asinine, made by people who are unfamiliar with hunting, or rifles/terminal ballistics, or both. It does not spray bullets, as it is not a hose spraying water. If that was how that person was shot in that scenario, that hunter should not be hunting, as it clearly violated the safety rules of firearms. No different than Cheney shooting his buddy with a shotgun, right? Just my opinion.