Because she's too similar too Jean. X-Man and Cable might share tk, but they don't freaking dress up as her and call themselves by her codename. THey also don't have Jean's fiery attitude and pick up her plot points. Those other similarities are not genetic, but a choice, and that makes her a whiny rip off. It's the writer's choice to present her as such and that's what she's coming off as.

Oh yeah and Rachel's "family" had about as much emotional impact as my spaghetti meat ball dropping on the floor. While the ties are there, from a story stand point, she's hardly known them or spent time with them long enough for it to create much of a stir. It's more the idea that a family was wiped out that is disgusting as opposed to it being "rachel's family" since it's really more of Jean's family, and even Scott's family.

Personal opinion, and if you like miss unoriginal please buy more crap-men.