I agree, most women who play with women are bi, not strictly Lesbian. For those women who are strictly Lesbian, it seems to me that for many, not all, it is mostly a philosophical thing rather than just a sexual preference. It's not that they say that they don't like dick, it's that they express they don't like men, their masculinity. Which for me is ok, you like what you like, but why then do they also resent women who enjoy masculinity/dick?
Note: Clair used to be more associated with this world than I ever was, and we discussed it a lot. Unlike most women, Clair became bi from the Lesbian rather than the hetero side.