So it seems, and its often a communications stalemate.There was a salient comment in that thread:
"So unfortunately we're in a stalemate, OSMF says we need a waiver, DNRME
says they don't believe we need one. So we can't currently use DNRME's CC
BY 4.0 open data within OpenStreetMap unless either OSMF or DNRME change
their stance."
 Seems familiar from occasional brushes with legal issues in my institute. If some initiative gets bogged in fine legal interpretation details there is a big risk of falling into a "too hard" basket indefinitely. 
Cheers
Peter
