@tyeshiaj There's a difference between "allowing" mods and "supporting" mods.
A LOT of games allow mods, many of them even include mod creation tools created by the game company.
I don't think I've seen one yet that "Supports" mods. I don't see how they can as mods are created by fans, not the game company. They can't really support something they didn't make.
All they can do is say like, "If you want to make and use mods, feel free. However it may cause problems in your game if it wasn't created properly."