It couldn't be more relevant. A man is dead because of that mistake. His family probably thinks it's relevant. What is completely irrelevant is hypothetical situations that are totally different and in no way analogous to what occurred, i.e police responding to a situation at hand such as someone being shot. That's not even close to what happened, they didn't respond to a situation, they created one.
That has nothing to do with going to a wrong address, and shooting a man who is unaware of why you're there and is concerned for his own safety.
Creating anecdotal situations out of thin air and citing individuals who moan and complain when "something happens to them", even though moaning and complaining are both well within one's rights, or the folks that want "300 cops ... now" is literally irrelevant.
Regardless, this isn't someone complaining about a ticket they received, or being mad about police response time. A man, who as far as we know was only guilt of being dumb, is dead.