They need to move on, not because it's bad, but because they should not repeat themselves indefinitely.
With Tomboy, Nxde and Queencard, I think they succeeded each time at presenting a feminist theme with an interesting twist and nuance. Super Lady on the other hand is very straightforward. There's not much left to the imagination. And in terms of genre, they went with EDM, which is already the genre the most associated to girl crush concepts.
So there's no room to move forward anymore on that lane. They reached the end of the road. Next time they need to do something else entirely in my opinion.
And it's even truer if Super Lady ends its charting career as a failure.