What he said doesn't matter.
Dead people tell no tales, unless you have really good CSIs and an honest Coroner.
He has a bunch of loose cannons covering their asses right now.
You have police busting down a door in plain clothes going in shooting over a warrant issued over a drug buy that did not exist by a CI that did not exist.
If they aren't selling or sitting on quantity, why would these people even suspect the police would come knocking? Home users are about as low profile as it gets in the drug world, an end point in the supply chain, and if they aren't having problems, causing a ruckus, misbehaving in general, they shouldn't even be on the radar. Neighbors have all seemed to be on good terms, so it isn't even an anonymous tip (and none has been mentioned) so that rules out 'swatting'.
Apparently, innocence was never presumed, and perjury used to obtain the warrant.
Why the false pretenses? Where is the motive to break down these people's door?
What is the history between them and the people on the raid?
Is this a bad address or is there something else going on?
Take the badges away from the people breaking down the door, and we would all be lauding the couple for defending their home. Completely unprepared, elderly couple wounds 4 of 5 attackers in home invasion, two seriously, before succumbing to their own wounds. Sad outcome, but an impressive defense.
We've seen how police 'secure the scene' before allowing or calling in EMS, and reaching for a phone might be all the justification needed to put another round into the condemned for 'reaching for a weapon'.
This smelled funny to start with, but after a couple of weeks, it reeks.