Maybe it's because, if "Disney used to be appreciated for doing little things like this", then it's stuff that they used to do, and stuff that they should still be doing, so when they make a big deal out of it doing it now, as part of a marketing campaign, as "Limited Time Magic", then that's what people are complaining about? They used to do things, stopped doing them, and then brought them back, and expect people to be impressed. Maybe they shouldn't have been removed in the first place?
It would be the same if they brought Jiminy Cricket back to DAK as "Limited Time Magic". He's the logo of the Wildlife Conservation Fund, therefore he should be at Rafiki's Planet Watch year round.
It's like the Splash Mountain refurb, people shouldn't be congratulating Disney for how good it looks, and for fixing it - Disney should be refurbing it anyway.
As for The Three Caballeros, maybe they should be out every Cinco de Mayo, or even year round?
I don't know - just a thought...