That isn't the "mod" Mr. Brown is talking about here, anyway. He's referring to specific mods that change the models and skins of the characters beneath the blur to be anatomically correct, or remove dating age restrictions, etc. It's already been acknowledged in another interview that beneath the blur is nothing but smooth mannequin-esque bodies with absolutely no skin detail whatsoever. They compared it to Barbie and Ken. Nobody cares that you can remove the blur -- there's nothing there to see.
What Mr. Brown is outraged over is that Thompson actually accuses them of supporting pedophilia and other nonsense because of (entirely user-created) mods out there that remove certain hardcoded restrictions on dating/sex age. Personally, i would be outraged as well. It's a disgusting accusation from a disgusting, petty man.
Hell, even in the Sims University expansion pack, they replaced beer with juice, because of cleanliness zealots. Thompson needs to know when to stop.