So apparently, G5 earthponies have no magic (even though they get their own crystal). I don't know whether to blame the G5 team for not doing research, or the G4 team for making it so easy to miss...

Not sure what you're citing, if something was said or not, but there is the closing moments with the foals and the hoofprint ir it's just to do with what's on-screen.

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I suppose there is that. If it means anything, we'll have to wait (too long) and see.