I don't think anybody is (or would be) arguing that TENG couldn't make for a fine theme park attraction.
I think what's tripping some of us up is that it is tonally fairly incongruous with the atmosphere it has been implied (in concept art and via statements) this land will have, and it's an odd deep cut* to base one of your signature attractions around when there are other, more beloved movies (and villains) that probably deserve more representation.
* Full disclosure, I'd love to see the Horned King in this land (which I don't expect), and it doesn't get much deeper-cut than him, so the fact that the source IP may be on the more niche end isn't inherently disqualifying; it's much more about tone.
When I go to Villains land, I expect to see gothic, grand, and…..grandiose? I ran out of G’s. It shouldn’t be colorful or whimsey. I want dark, sinister, and foreboding.
Disney has already been orchestrating this sort of expectation (through the released concept art). The visual storytelling of that image suggests -- in terms of tone and
feel -- something much closer to the Haunted Mansion end of things (with a medieval spin) than anything else.
So if that's
not the intent, Disney will need to start communicating that very quickly, or else they could end up with a Galaxy's Edge situation, where the land doesn't
quite deliver what a lot of fans expected/wanted.
(Insert mandatory "I think Galaxy's Edge is still really good" disclaimer here.)