Terms such as these often grow or adapt to changes in an industry. B-movie for example was originally for second half of double feature movies but even though double features are pretty much extinct the term lives on meaning low budget movies. The same will probably happen with the JRPG WRPG terms. As long as the stylistic lines remain it is just too useful for people to be able to ask, "Is this a JRPG." As long as they feel comfortable that it convey's information on whether they will like the game, if that distinction is important to you, or not I expect it to remain. If the term loses meaning it will go away as either new terms for distinctions in the genre become more important or the genre becomes to homogenous or heterogenous for people to recognize a distinction between those groups of RPGs.
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