My wife is a reg-force infanteer. At the kind of distances you’re firing at inside of a shopping mall she could comfortably dump a ten round burst into a person’s torso and not miss a shot. Even an untrained shooter could easily land a lot of lethal hits if they were firing into a crowd. And yes, automatic fire is absolutely used in urban combat; at close ranges it is very easy to control a fully automatic weapon sufficiently for that. The standard strategy is to aim for the navel and let your fire carry up the torso; it’s known as “zippering”. When intentionally controlled by the shooter these weapons do not jump around anything like the way you’ve seen in video games.

Also, generally full auto is not that great for suppressing fire, unless you’re talking about a machine gun. With an assault rifle you’re better off maintaining steady suppression in semi-auto. It’s not so much the volume of fire that keeps a target’s head down as it is the consistency. Dumping a whole mag and then stopping to reload gives them plenty of time to set up and start laying hate on your position. There are exceptions like Aussie Peel Out, but they’re rare. For the part talking guns is the way it’s done.

That’s without even getting into the fact that saying “automatic weapon” doesn’t necessarily mean “fully automatic” (hence why the word “fully” is usually in there; if there wasn’t any ambiguity, why is it necessary to specify?). It’s much more likely that the previous commenter was referring to any form of self-loading weapon.