The headline shouldn't have been re-written, but I think that denial will, in fact, be effectively permanent. Parler's administration is fundamentally incompatible with markets that disallow the willful propagation of hate speech.
Perhaps it will be, and we'll find out if that's true, but meanwhile, we shouldn't be arbitrarily rewriting headlines when we post them here, especially to make them say things radically different from what the original headline, and article, said.
Nowhere in the article is it stated that Parler has been "permanently" blocked.