I don't really think Shadow Moses Island would be effect by this since there's actually platform to land on instead of the initial floors...I guess it looks like you're always gonna have to tech on flat stages when playing Falco then. Bad news for Shadow Moses Island.
Opponent needs to be at a state where they must be wobbling in the air so they can actually fall back/belly first to floor... In order to ever get into that wobbling state, they need to enough damage and hard hits to be able to get it there... Higher damage = further launch, so it'll probably ohkay... Unless there's a Falco setup where it can do it constantly, then we have a problem...