Seemingly. Based on what’s TP2000 said, the plan was designed around Disneyland’s mountain (the close proximity to NOS makes sense), and it was treated as an afterthought to add it to WDW (much like how they initially planned on cloning Mission Breakout to Florida’s Tower).
Typically how these rides and rethemes seem to work, based on what insiders say, is that they’re planned with Disneyland in mind, and then cloned to Florida as a way to easily add something new to both parks while conserving resources at the same time.
I do think this will happen eventually at WDW if reception is good at Disneyland, however, they have a lot less to gain from it by going ahead immediately. The ride will continue to remain popular in its current state, a huge part due to Florida’s heat. This isn’t to mention the fact that WDW is in the midst of a massive overhaul to Epcot, and some minor changes to MK, whilst they are steadily losing money due to the pandemic. Tourism isn’t just going to bounce back on the 11th. This will take years to recover from. It just makes no financial sense to go full steam with this right now.
The timing of the announcement was opportunistic. Had they of announced it any other time, the backlash would have been way worse, and they knew that. But the ride is still going to be popular, even if a few Twitter “warriors” are bent out of shape.