I think much like Johnny Depp being inside the actual ride, it's something that we (or at least, me) will likely resent for years to come, but won't actually stop anyone from watching the show.
Was changing Pan to Pirates necessary to make Fantasmic! relevant after years of declining popularity, mostly empty shows, and an ever declining fanbase? Did it make the show more cohesive, giving a better example of Mickey's imagination than Pan was? Nope!
The only reason this change had potential was the potential of the projection mapping effects, which don't work.