It means no such thing, and even if it did my point was that Maelstrom's popularity was still high enough that guest demand for it exceeded its capacity; otherwise it would not have a queue at all.
For starters, Maelstrom wasn't even on the same tier as Soarin' or Test Track once FastPassplus was fully implemented with the tier system. For another, those other two rides are the only other major ride attractions at EPCOT now that Mission:Space has become so unpopular (to the extent that it runs at below-capacity). Maelstrom was a close third to Soarin' and Test Track prior to its closure and really the only other attraction in the park that ever developed significant queues. Spaceship Earth only became a long queue once it and Maelstrom became essentially their own tier in the system, and once Maelstrom closed its standby queues have increased by 50% or more. Perhaps you can remember the daily morning sprints from the turnstiles to the Soarin' fasftpass distribution centers, but EPCOT's severe lack of headliner attractions made its paper Fastpass allotments weird. It wasn't uncommon for Soarin' to run out of paper fastpass return times well before 10:30, which meant Test Track and Maelstrom would receive its fair amount of Fastpass use by default.
But that's exactly my point. The Maelstrom hardware was already being used at its full capacity and yet the attraction was still popular enough to generate the 3rd-largest queue in all of EPCOT. The Frozen overlay isn't going to add capacity; it's only going to increase demand.
And Disney isn't getting "another" ride, they're simply re-branding an existing, popular ride to make it even more popular. As you indicated, the Frozen meet-and-greet was far more popular than was suitable for the Norway pavilion- it exceeded the guest flow and infrastructure of the area and was a nightmare for both Operations and park guests. The new Frozen ride is going to be the same story. No one's arguing that Frozen isn't one of Disney's hottest properties in years; the problem is that it's
too popular to shoehorn onto a low-capacity boat ride in a small, cramped pavilion that didn't need a traffic boost in the first place.
Sure, people want a Frozen ride and Disney should give them a Frozen ride.
That does not, however, justify Disney,
1. Going the cheap route by overlaying a small existing attraction instead of building a new installation on a scale commensurate with the known popularity of the Frozen franchise.
2. Setting themselves up for guest flow and queue headaches by installing the overlay in an area of the park ill-suited for the long queues that will inevitably created by installing such a popular property into such low-capacity ride hardware.
3. Further compromising the thematic integrity of the World Showcase.
All of these mistakes are going to adversely effect guest satisfaction in the long run. Even if the Frozen ride is well-received, and it almost certainly will be, building it where they are in the way they are is still a dumb idea.