I heard somewhere that the removal of swastikas was not “PC” but so that the kits would be legal to sell in Germany. I suppose it didn’t make sense to print two sets of packaging bearing in mind that the existing ones were multi-lingual anyway.
On the other hand, painting out explosions, bombs, firing missiles and burning aircraft is definitely PC. It’s probably to avoid “glamourising” war, but in effect it makes it all seem far too clean. I find it amusing (and rather sad) that in the Bit-o-Lace artwork you can still see the reflections of expurgated fire.