I think her greater point about these women in art is interesting- are these muses interesting to the artist simply BECAUSE they are so vague? And the artist can imprint whatever of himself that he wants to onto them?

See, the way YOU put it, it DOES sound interesting, but she managed to make it as offensive as she possibly could. Thus, my knee-jerk reaction.

I don't think that feminism means that we can't judge other women

Well, no - but she seemed to dismiss a whole class of women she had defined herself, and - again, the sweeping generalization. Ticked me off!