The officer entered the house without a weapon drawn. Upon observing a threat, and was engaged by that threat before he was able to draw and aim his own weapon.
For the officers to have had sufficient time to engage him before he completes his initial attack, they would have had to have approached the door with weapons already drawn.
That’s why I asked about the time frame. Meeting your expectation for this scenario
The only feasible way they could have feasibly de-escalated the threat or used a less-lethal weapon would have been to enter the home of a black family with tasers and nightsticks in their hands.
I am comfortable in assuming that you would have a giant fucking problem with taser-wielding cops barging into black homes with no indication of an active threat.
You want the officers to wait for backup? I am comfortable in assuming you would have a giant fucking problem with a cop sitting in his patrol car while an attack is in progress, just waiting around until his partner arrives.
No, there’s no policy or standard that they could adopt that would actually make you happy, so there’s no point in trying. Since you and people like you are going to be pissed off no matter what they do, they might as well ignore you completely, and focus on someone else.