Yes it's perfectly fine to engage in the discussion as to whether all cinematic gunfights should utilize CGI and eliminate guns from sets. That has absolutely nothing to do with culpability for what already happened, which was what I confined my discussion to in the OP.
Baldwin is responsible for two reasons.
He is the executive producer of the movie and thus responsible for everything that occurs on the set.
He was holding the gun as already discussed.
I am not proposing a simple but ultimately less than satisfactory solution for preventing recurrences. I am correctly assigning blame for what already happened.
So take your heuristics and blow them out your prop gun.
*MySmiley*
"Bustin' makes me feel good!"
Ghostbusters, by Ray Parker Jr.