I know KJK doesn't call herself a feminist, and I think that's a shame. From everything she does she ACTS like a feminist. I think taking your balls home and going your own way might have been self-preservation in her mind, but I believe a lot of women would like to see some healthy, moderated and less-faction oriented disagreement.
KJK, hasn't to my knowledge, initiated a public disagreement with anyone but she is frequently attacked by feminists for her methods. I've seen her express frustration at the way she is attacked but more often I see her championing the work of the women who attack her.
I'm not sure that she struck out on her own for self preservation but more because she wants to do things her way and knows she would have to compromise too much to be accepted by those who think they own feminism. I think she has made the right choice, she's very effective and isn't putting feminists with different approaches down.