That creates a significant can of worms in regards to what parts of the character are derived from the source material that is owned by DC. See not allowing sherlock holmes to smile for an example.
I actually think this brings up a good point. Artists they hire for these tabletop game jobs will end up using AI to create a base image or backgrounds and edit it for the project one way or another. They'll do it to increase their own output and income.
Edit: And guys like this will pay you less to extract more profits from you with that in mind of course.
The key thing is, their license model and walled garden policies are what created the problem. Wringing their hands when something they knew would happen happens isn't admirable.
Emergent altruism is not something you should expect in a game that rewards being a dick. EVE had it right with safe zones and backbiting outside of them.