To provide some perspective - to be "fair:"
I have three friends who are English professors, who all think I am too anal about our language. "Languages evolve," they say. "YES, they DO," I say, but the constant effort of people who refuse to learn what words mean, and the fact that we already HAVE words (multiples in most cases) to describe everything already, reassigning meaning to words makes communicating clearly impossible. LAZINESS and ARROGANCE are the two main factors in this blight. So, yeah, I get peeved when someone tries to be clever with "redefining" something, especially because someone else is calling it whatever they want to call it to suit their agenda.
We should not stoop to the level of others inaccurately describing things. Yeah, an AR can be a "modern sporting rifle" and it can be a civilian defense rifle," BUT let's not paint ourselves into a corner. GEEZ! We can't even be trusted with PASTE WAX now. I don't need to excuse or qualify my rationale for owning something I'm supposed to be trusted with, like firearms - of whatever kind.
Playing word games - MIND games (some people think they are SO clever) may have a place, but in terms of effective communication and, well, HONESTY, leave it at home. I've had to tell more than a couple overly credentialed, "clever people" that if they want to play mind games, the ought to have at least shown up properly armed. I may just be a dumb hillbilly, but I mean what I say and say what I mean, unless engaged in some form of humorous or satirical endeavor. If someone says something which does not make sense to me, I start asking questions for clarification. 99% of the time, by the time the person explaining finishes, they're more confused than I am, so why not just call things what they are and save the extra work?
We might also remember that when our own predecessors sat down and hashed this all out, most private individuals were already armed with far better and more sophisticated equipment than any army was issuing. Man, I'm not an AR guy, but now I want to go out and buy one and call it an "AR" and tell people "yeah, it's an AR, an evil black rifle."