Frankly, I think the only reason 90% of all "vile" material is an issue is because the magazine pointed out that it was vile.
Most of the stuff in the relevant issues of Dragon and Dungeon wasn't any worse than some stuff we saw back in the days of 1st edition, before it was tone down (for better or worse) in the "no mention of demons and the bad guys must always lose" days of 2nd. It's only a big deal now because the publishers are making a big deal of it.
Sure, some of it is over the top, and probably deserves a mature rating. But most of it, I feel, isn't gore for gore's sake--it's hype for hype's sake. If Dragon and Dungeon include a bit more "mature/adult/whatever" material, but don't actually point at it with a big neon sign the way they have been, I doubt anyone will notice.