A random picture, at a random location, at a random time, at a random angle, is more trustworthy than a TRNG no matter how it’s implemented. I simply don’t care what mathematicians say. Most of them are poor. The real world has many pitfalls preventing perfection or trueness. The NSA obviously has a close relationship with TRNG manufacturers if only for the trustworthiness of their own systems. It’s anyone’s guess how far that relationship goes. No one who “correctly” implements a TRNG function should be gloating.