All of those songs you mention are also on most commercial AAA stations... target demo, 25-54, usually median age of 38-42.
LOTS of people that are 40 listen to Pearl Jam, STP, Jane's Addiction, etc because they were in HIGH SCHOOL when those songs were new.
If someone graduated high school in 1991, that person is now likely 39 years old. Pretty damn close to 40. If they were in college and got into the alt/grunge scene in the early 90's, they're over 40.
I don't see RXP 2.0 going for 45 year olds. But they aren't gong for 18 year olds either. Listen to it. For expample, playing Spacehog, "In the Meantime" (they did yesterday), a one hit wonder from 1995 isn't going after someone who was 1 when the song came out. What 18 year olds they get are gravy compared to the 25-34's.
I know plenty of people in their late 30's early 40's who enjoy Alabama Shakes, Black Keys, Foster the People, Of Monsters and Men... Just saw the Alabama Shakes this past weekend, also recently saw the Black Keys and Of Monsters and Men. Guess what? The crowd wasn't all Allston hipsters (I was in Boston), but lots of people in their 30's.
And, RXP 1.0 playing AC/DC WAS the WRONG DIRECTION for the station. But you and I won't agree on that, ever.
And finally, this is radio programming. Just like politics, there are differing opinions about how to execute a format and target a demographic. Not all of them are right. I'll admit that in retrospect a straight up AAA on RXP wouldn't have done any better than what it did doing the hodgepodge that it was.
Lots of people thought that FM News would work too, and we all know how that turned out. Lots of people on this board, who aren't super experts could see that it wouldn't work and said so. Just shows you that sometimes when you're too close to something and have a vested interest it's tough to see the forest through the trees.
Since you've proclaimed yourself to be the expert on alternative and the 18-34 demo, and the final word on such, this is my last post because I'm tired of typing.
I'm done. I'll stick to the engineering board, Fell Out Boy, who's name and resume remain unknown, can now be emperor of the RXP posts and anything else on the NYC board.