Genuine question - why are UVs always a huge issue? Isn't it trivial to generate a UV from the actual 3D model? Or do you mean that they just don't give you an image that actually fits the model?
It's trivial to generate "some" UVs. However, in this case there is a texture with a lighting pattern as part of the generator. Ideally the model would be unwrapped so that the correct areas of the texture correspond to the correct area of the model.
In the case of an artist working from scratch the skill is generating UVs that allow the artist to easily paint the texture and provide an even area for each part of the model. Otherwise some areas will be stretched and blurry.
In the case of an artist working from scratch the skill is generating UVs that allow the artist to easily paint the texture and provide an even area for each part of the model. Otherwise some areas will be stretched and blurry.