Yes, the AR buffer tube presents an issue of length. There are versions which incorporate a new spring arrangement to eliminate it. With a 10.5" barrel a standard AR can get under 26" and will fit in a tennis racquet bag, which is becoming a cliché in some circles.
They are far from range toys, no firearm is. Since the only distinct difference between an AR pistol and the Mk18/CQBR used by ship boarding teams and small units is a stock, I find the assertion silly. If they are a primary weapon chosen by skilled professionals for use in urban settings or close confines, so much the better at presenting valid credentials.
Sure, some people like the noise and play spray and pray, I've seen it done with lots of deadly weapons over the years. The intent of the shooter doesn't change the lethality of it's use.
That there is ANY connection to the recent issue of the brace being used on the AR pistol and 5.56 AP ammo being banned goes to the lack of informed opinion by some. The AP issue has been going on since "sporting purposes" got inserted into legislation, and it took more legislation to exempt certain rounds. There are actually few bans at all, the latest on the 7N6 wasn't - it was a trade ban on it being Russian, not AP.
There isn't a ban on 5.56 AP, and there are bills being introduced to Congress to strip "sporting purposes" from the law. Seems the ATF's effort isn't working out so well, it just got a couple of million people to make Congress wake up and do something about it.
And a lot of them mentioned "Ban the ATF." Nobody did that before. Now it's being said. For that matter, some presidential candidates are saying the 2A is there to keep government from getting out of hand, right out on camera. It's how this election is going to play out, can we get the downtrodden and underpaid white male working class guy to vote the right way instead of calling him a racist pig?
The best one at it gets elected.