The collaboration of GUCCI and Sims 4 moders! Sounds amazing, but I suppose it can be determined as the violation of the license agreement between EA and players. I am also not sure that there is no trademark infringement of Sims 4 brand.
There are some original Sims 4 3D models in the video published by GUCCI. If there is no agreement directly with EA, I'm afraid it's not good for GUCCI. I mean, I will be very surprised if it will appear that EA indeed didn't participate in this collaboration. 2/