Not trying to be negative or anything, but wouldn't the "originals" be the least original in the lineup now? Technically Evolution and Active are older molds/lines. I'll give credit where it's due, but these aren't the originals anymore. Discmania is fantastic at marketing though. But people were all over Rivers and Saints and Zeus's too. Now everyone just throws Leo 3's, Sidewinders and Wraiths/Destros again. Or Stalker, Undertaker, Force/Zeus. Whatever it is.
Technically, the new product from the Discmania is going to be PDGA approved as the "New P2". So, yeah, they aren't the original disc. However, given the vagaries of disc production, it's not like you could ever count on getting the same P2 you'd always gotten anyway. If it looks like, feels like and flies like a P2, to within some tolerance, and is available in plastics, weights, colors, and stamps people like, it will sell.
I'm not sure who the "everyone" you are talking about is, but plenty of people throw Trilogy, MVP, Discraft, etc. molds. Last year there were visible complaints about
too many people throwing too many Trilogy molds (with references to "fanbois").
If you have a 40 year history with Innova discs, you are probably going to return to what you know. But anyone already committed to a P2 wasn't quite in that vein. Not to say that the P2 wasn't an Innova product, but something drew people to throwing the P2 instead of the Aviar. And the new P2 will actually be in supply.
Maybe Innova or Infinite will start selling the "Pappa Deuce", with the same Aviar+Spacer mold setup, but it's not as if Innova has suddenly added capacity. If they couldn't make P2s for Discmania, they probably can't make significantly more Pappa Ds or Alpacas or whatever. Plus, Discmania is Innovas big European distributor. I suppose they could spit on that relationship if they want, but why?