Modders did it to themselves

[BlisteringFrost]

The issue with this is less in fact pertaining to the use of mods, and more due to the fact they've used a registered trademark on a public billboard, and misrepresenting.

At the time, those outfits weren't publicly available in the game. So a player having them wasn't possible without mods.

Which means yes, that billboard has modded gameplay on it.