You're fine, I don't know anyone under the age of 40 who still reads NME.
"Oooo", I thought, "he's clearly exaggerating, but I wonder what the demographics of NME these days are?". Turns out it's ~66% male (no real surprise there) and >90% aged 15-34....
http://www.mediauk.com/magazines/36168/nme/readership-figures