Rubber gun? No problem. Play with those all you want. However, this was not just a “prop.” It was a fully functional weapon that was supposed to be loaded only with blanks. By the way, you can kill yourself or someone with a blank - look up how Jon Erik Hexum and Brandon Lee died.
Regardless, that fully functional gun can be loaded with nothing, with blanks, or with real, deadly ammo. Nobody on a set should be playing with a gun that could potentially kill, any more than someone with a deer rifle or a handgun in their house should be playing with those even if they are certain the gun isn’t loaded. Gun safety is practiced for a reason. Halyna Hutchins’ death was yet more proof that gun safety applies everywhere. It doesn’t matter that the gun was only “supposed to” be loaded with blanks, or left unloaded. Obviously that’s not how it worked out that day, and that day could've been any day. It wasn’t “make believe.”
The only thing I agree with you here is that Baldwin shouldn’t be prosecuted. He was relying on someone else to appropriately load the gun. But should he be sued into the ground? Absolutely. He wasn’t just an actor - he was running the show. He had the responsibility to have a good crew that kept things safe. The armorer’s trial and discovery beforehand uncovered flagrant safety violations that were known by all. He could’ve stopped the shooting, had her replaced by a responsible armorer, etc. After the violations on set, there should have been a safety review by a well respected pro. That would’ve been a delay, but it need not have been long. It doesn’t take more than a day or two to check weapons and make sure there is no live ammo anywhere on set. It would’ve cost more, but cost control isn’t a valid reason to get someone hurt or killed. Those bad decisions were on him.