Personally, I love D23. We are on the west coast and have gone to tons of events. To each their own.
What I don't understand is how people who are not in it can have an opinion on whether it should continue or not. If it doesn't concern you, why hate it so? I don't see any value in fat-free ice cream, but I don't want it wiped from the planet so others can't eat it.

Just curious why it's mere existence makes non-members so angry. If you don't like it, don't join, end of story. Disney will happily offer you plenty of other things to spend your money on.