Winnie the pooh was created in 1924, its hardly a new franchise. And yes they took out snow whites scary adventure but they're building a new snow white ride 200ft away from it.Disney has no problem killing popular classic attractions for their latest cash cow IPs. (Mr. Toads at WDW and Country Bears in DLR were both replaced with Pooh, Snow White's Scary Adventure for Princess M&G). Or even killing a major E-Ticket with no replacement for over a decade as they did with 20K Leagues. Btw, 20K leagues suffered the same fate as Kongfrontation and Jaws in that it just became to expensive to continue operating. But when Universal killed Jaws they didn't let the Jaws lagoon collect popcorn boxes and paper cups for over a decade. Toad and 20K were my absolute favorite attractions from my early years going to WDW and would have loved sharing them with my kids.
My take is that Disney Execs would rather have ridiculous Exec compensation packages (Iger made over $40 Million last year) and give out huge bonuses than keep their parks fresh. With this MO of personal greed they have little choice but to market it as "nostalgia".
Universal went to work on jaws right away because they had a plan for it. Yes part of the reason for axing both those attractions were because of maintenance costs but do you think the fact that they both offered great space to build on a newer popular IP didn't make up a big percent of their decision not to do a major refurb to update the attractions?