That it isn't.
It has never connected with the average guest. It regularly draws a tenth of its hourly capacity if not less. It scores the lowest in exit polls of all MK attractions.
Then we get to the geek opinions.
Whether or not Stitch is worthy of a high spot in MK has never been a situational belief of mine. In fact, when they started with the Stitch mania I was extremely upset. It was like they were trying to make Stitch the symbol for WDW. Replacing good old Mickey. You couldn't swing an overloaded, I am always prepared, backpack without hitting something Stitch related. I never found AE to be scary, but, I believe I was intelligent enough to see that it could scare the crap out of small kids and had no place in MK. But, I don't see anyplace that says that kids were scared out of their wits by Stitch. Surprised, yup, I'll give it that, however, the "grownups" didn't like it. I wasn't floored by it, but, I thought it was amusing and certainly different. I never went to it every time it was there so I will admit that it was hardly my favorite.
That said, I am not even arguing that it should stay and if, as you say, there is something planned to fast-track it to something new, I'm all in favor. The discussion was that they could close it anytime because it has not affect on crowds. Everything has an affect on crowds and any loss of an attraction will influence it one way or the other and, I believe you will agree, any outright closure of an attractions is pretty much the same as a going out of business sale to the average person and only an idiot would want their business to look like that. But, in recent years that has exactly the system that the Disney brainiacs have decided is the way to go.
So I will correct your statement slightly. "It has never connected with the average
adult guest."
Something to consider just as a bit of Irony. CoP regained it's life because it reopened regularly when they were switching over from AE to Stitch. Now CoP, once thought of as a massive loser, is being given a major looking facelift just in time to pick up some slack when they close down Stitch. Isn't it funny how this all works?