

2A for overthrow purposes means you and your militia buddies can build up an armory that the government can’t take away. Pre-overthrow you’re lawful citizens doing perfectly fine civilian stuff. It’s a just in case, probably not even going to be used. Once you’re rebels, sure, laws don’t matter, but if they make preparing yourself to be credible rebels illegal, then the rebellion never gets off the ground.
We don’t really know how aware he was that they were cops. Breonna Taylor died because her boyfriend didn’t know they were cops.
Sure, this could just be a survivalist whacko taking his last stand once the gubmint finally came for him, but it also could be triggering someone’s fight or flight when they’ve surrounded themselves with tools for fighting and a fearful mindset. And again, a cop got shot. They should do stuff to avoid that.