Not at all. The Greek root word from which the English word "apostate" simply convey the idea of "standing away", i.e. to distance yourself from something. Does the current GB "stand away" from previous WT teachings?
Did Jesus "stand away" from the teachings of the Pharisees?
If so, is "apostasy" ALWAYS necessarily a bad thing?
In purely semantic terms... WHAT'S THE DIFFERENCE?
The difference is, the GB calls their apostasy "new light" and everyone else's apostasy "apostasy".