I suspect that people who have day to day knowledge on this operation aren’t commenting on this subject but as an aside, hover taxiing in fog is an entirely different exercise from scud running i.e. flying in IMC below MSA. Ask anyone who is qualified to operate in an RVR below 400m how they get from the runway to dispersal. I do realise that will be in a rather more controlled environment than involved here.
Cheers
TeeS