Didn’t he already have himself de-aged for at least one of the Marvel movies (Winter Soldier?)? Granted, I’m sure there’s a big difference in how these technologies are used, but it just seems like the de-aging thing was one of the first steps in creating digital replicas. I’m sure somebody somewhere already has the files to make a RDJ replica if they wanted to, but using somebody’s likeness without their consent is already a sue-able offense, so this doesn’t seem like anything new.