9G, I see what you are getting at, and I know the reference you provide. I would have never connected magnetic variation errors with the SOP to check the ILS course on the PFD. Are you certain that this is what Airbus means with check ILS course? Airbus certainly does not mention it in their SOP and as you rightly quote Airbus, autoland would be prohibited anyway on the affected fields!
Are you sure that this is not a case of flying a 'bus like a Boeing?
(which happens a lot!)