The problem with Soros DAs is Soros DAs. Bragg didn’t even need a coherent legal theory. There is simply no way to keep them from abusing their power through trying to make laws immune from their abuse.
Of course Soros DAs are a problem. But "hate crime" laws like this (which is what it really is) only makes lawfare easier, while achieving nothing worthwhile. Because as I said, laws against threats and harassment already exist.