This is the misunderstanding I think people have. They truly think it is something new and revolutionary.
I agree it's not brand new and revolutionary - more like an incremental shift over time until you stop and look and realize that where you are is not where you started.
And of course there have been breweries experimenting over time, and for all I know, there could have been dozens of breweries making things just like Heady Topper ten years ago. But if nobody notices it, and word doesn't get out, their innovation fails to catch on until somebody else does it and gets noticed as the innovator.
So while there are articles and forums that may have mentioned similar hopping schedules, it never caught on big. I mean, I've been brewing for over 20 years, and been trying new and interesting craft brews for even longer (and lived in the Bay area and Portland, OR from 2007-2010 where I tried everything new and local I could get my hands on) and when I tried Treehouse's Julius a few years ago, I had never had anything like it. Clearly it was still an IPA (unlike "black IPAs", which is just a dumb marketing term), and I've had and made cloudy IPAs before (the cloudiness is an irrelevancy to me), but it was decidedly different.
The thing is, if you don't think NEIPAs are distinct, then neither should you think WC IPAs are distinct. There should just be IPA, with its many different expressions. But once you start defining and labeling sub-categories, you have to acknowledge that they are different. Hell, maybe we should do away with style descriptors altogether, maybe not, but as long as we set rough guidelines on what defines a style or sub-category, you have to look at those defining characteristics.
Has WC IPA evolved over time? Of course, but you know as well as I do that there is set of characteristics that "define" a WC IPA (hence going to the trouble of giving it its own name), and the low bitterness, cloudiness, and tropical fruit hops flavors are most decidedly NOT part of that description.
So revolutionary? No.
Innovative? Absolutely.
Also, just so you know, I'm not trying to be argumentative with you - just putting out the alternative point of view to yours. Both sides of the argument have valid perspectives, but it looks like the term NEIPA is probably here to stay.