Well, fine, take this approach: Everyone perceives partisan identities differently, and some people still prefer less modern definitions. I go to school at Cal/Berkeley, the people coming here for its 60's reputation are obviously not aware that the campus GOP is the biggest school organization on campus (I think that's still true). But how they choose to identify with it is simply through a different process. In the South, being a Democrat does not mean being a liberal, it just doesn't. Hell, a nationalist Republican took away their slaves
But seriously, I think a less-entrenched partisanship-ideology definition is a positive since it encourages voters to make more evaluated decisions rather than simple partisan ones.