B.S. Every instance of a mass shooter has shown the faster someone confronts the shooter with equal or greater power, the less bodies will be found once he or she has been dispatched.
The Uvalde cops stood around for almost an hour and a half before one brave cop decided to go in and take him out. That time allowed the killer more time to reload, reposition, and kill more unarmed and unprotected children. The cops listened to the children being killed without engaging with him at all. They served absolutely no service by even being there until the one LEO did the job several should have done almost immediately upon arrive at the scene.
I understand your emotional response. But, it doesn’t change the reality...you CANNOT conflate the two.
The best you can do is assume, as your response demonstrates.