I don't think anyone is "against" a Belle meet and greet at all. It's actually a great idea. But why Heritage House? Belle has her own little slice of heaven over in Fantasyland. Why not set something up around Gaston's? Why not in that general area?
Moreover, Belle is not really a rare character. The 7D are pretty rare.. Friar Tuck and the Brer animals are rare. I think Disney fans would be more upset if there was only a certain exclusive way to meet these characters.
Outrage or not, Disney has lots of things (meet and greets, experiences, events, activities, etc) that are "exclusive" and are upcharged for. They have been doing for years and seem to be increasing it more and more each month.
I'll name a few:
Want to meet Captain Hook & Smee? Pay for the Pirate & Pals fireworks voyage.
Tons of hard ticket events to meet Halloween, Christmas, Villians, Pirates & Princesses... Characters. Also to experience "special magic."
You want to look like a pirate,a princess? Pirates League and BBB are there for you.
Don't even start with all the character meals so you can meet characters without waiting in line and also meet "exclusive" characters (different outfits orbit available elsewhere).
There are many more examples and we could go on and on. It has been "pay to play" for a long time.
Disney is a business. They advertise and incentivize their products day in and day out.
Understand there are two issues here. 1) Thematically Belle does not fit in Liberty Square.
However repeatedly TDO has shown that they are willing to break with theme far to often these days and have shown that it is not following the theme parks axiom of continuity Walt Disney prided upon.
2) The addition of Belle is not rare, unique, or in any way "exclusive." It is not an incentive to purchase a product or a "benefit" to having said product.