Well, I don't know about Paul McCartney, but I think it's some of his fans who are jumping on the anti bandwagon. What for I don't know as the 'original' was most definitely out for making pots of money, and not for the benefit of those who have served the country.
As for the complaints to ASA, words are failing me.
I see you have made the same point Galium, with reference to the P McC version.
Christmas 1914 by Mike Harding depicted the same event, and that makes me cry every time.