My thoughts are that I can't find a single shred of evidence that this originated from any official source. Some literal faggot tourist made this, then posted it on a faggot subreddit in an attempt to "own le chuds xD". It was accompanied by an embarrassing "...and everyone clapped!"-esque story that, ironically enough, belonged belongs in /r/thathappened:

Was at a tournament where someone had their army painted to reflect their pan nature. And some bigot went off on how "that's offensive to Games Workshop's work."

A Games Workshop rep came up and told them to get the hell out because Warhammer has no place for bigotry.

Everyone was quiet as the bigot left in a huff... at which point there was a lot of good cheer all around... and then I pointed out "Warhammer has no place for bigotry? Have you read the lore?"

The rep responded with "You know what I meant." Which everyone got a good laugh at. :p

Games Workshop posts their Ls publicly through their own channels. You don't have to go diving on in the dumpster that is Reddit in an attempt to link third-party garbage to them.