My question is what next? Everyone forbidden from briefing any Canadian or Scandinavian on anything cold weather? A captain cannot brief an FO on a steep approach if that FO used to be based in LCY or anywhere else with a steep approach? Nobody not from Africa is allowed to brief or fly over Africa? No briefing of any engine failures/fires to someone who has experienced a real one (what on earth you gonna tell him about it when he's done one?)?
Why not just do away with all briefs where the person briefing has less experience than the other - that's what the root of this gets to, subconsciously or not.
A very slippery slope towards the danger zone of no CRM.