Not disputing that may be the case, but we don't know exactly why Disney walked away. TV and film production companies cancel shows for myriad, sometimes quite ephemeral, reasons, sometimes something as simple as a change in management.
I'm still annoyed that Lockwood & Co got cancelled by Netflix despite, apparently, being incredibly popular, it just wasn't popular enough.
As Rich says we have no context, it's possible those viewing figures were well below what Disney anticipated, but it's equally possible that the margins were thinner that it might appear. Maybe the show needed to do double or triple the numbers it got to have a hope of reprieve, or maybe just a few hundred thousand more might have encouraged Disney to keep faith with it.