The reasons mentioned are good reasons for opening the ride earlier than the current planned date. They are also nothing Disney isn't already well aware of at this point. If it makes financial sense to push it up, if the operations would be ready to go, if the rehab can be completed safely and the ride is ready to perform up to it's designed expectations, it's been properly tested, etc. of course it will be opened earlier than the current target date.
The question is, can all of those things be completed early and everybody be ready to sign off on opening the ride without compromising safety, show, the budget and everything else? If they can open it early, they'll do just that.