Winnie the Pooh is probably not Star Wars or Frozen IP level. But I had a look at Shop Disney and saw that within the Toy section there are many Winnie the Pooh toys ranking even before any of the Disney Princess products - Grogu being in #1 spot. There is also a new Winnie the Pooh musical touring UK. Hence, I would not underestimate the popularity of those characters with smaller kids or Disney fans in general. The needed investment for an attraction would be rather low - especially compared to Frozen in WDS.
Oh I agree entirely. But in context of Disneyland Paris, Frozen, Star Wars, Marvel and a good few other properties are way ahead of Winnie the Pooh in the pecking order. Mid 90s-mid 2000s Winnie would have been much closer to the top of the list but the money was never there at DLP to do anything substantial.