I agree... totally the wrong image for what was trying to be conveyed here.
I think certain characters have had their moments and have had their falls. But in terms of the "demise" of the X-Ladies... I'd think about that statement.
Rogue has had X-Men Legacy for quite awhile, Storm had X-Men (vol 3) for a bit and was redesigned, Dazzler had the X-treme X-Men, Pixie was the poster child for student turned X-Man, Polaris was brought back from space and led X-Factor (both the previous and the newest incarnations), Psylocke had Uncanny X-Force, Frenzy (of all characters) was brought back into the light for awhile, Emma Frost had the role of "leading lady" in many of the X-titles, Kitty Pryde, after returning from space, became a teacher, than headmistress of the school, Magik was brought back from limbo, literally, and has become a major player, Marrow has now just been brought back from obscurity, Omega Sentinel has been recreated in terms of characterization, X-23 is... well... X-23, no explanation needed... should I go on?
"Demise" is not the correct term here: Characterization is. It is the writer's intent/license on whether or not they see fit any number of characters into their stories/plots. And if you think about it... women, as a whole in any sort of cultured medium, have come a long way since their inception in any form of media. Think about it.