No one can accurately predict what a jury will do.
A 911 call is not proof of guilt beyond a reasonable doubt.
Would you want to be arrested, brought to trial and convicted because I called 911 and told them you threatened me?
Of course not. That would be silly.
It seems that El Paso County did the best they could have, never knowing this idiot would go on a killing spree.
Unless involuntary committal is brought back, nuts will slip through the cracks. And they likely would with it.
Blaming the courts in this case is like blaming the Moab police for not arresting Meatball for killing that Petito girl when they had a chance.