Yeah and if they do what sentiment is that going to give to the tens of millions that still survived? Also if they kill all of us, who's going to do their labor? There has never been a period in history where change occurred without bloodshed, sacrifices need to be made and we need to stop acting like peaceful protest does anything.
If the U.S military had a 0% defection rate, never lost military hardware, were willing to destroy their own industrial centers, with the resistance unarmed (2A people) and unsupported by any foreign powers, then yes, they could kill all of us. But none of this is true. After all, the U.S military literally lost a war against farmers with AKs.
I plan on joining peace corps and making connections through that. But in order to successfully overthrow a government you need to have someone ready to go to fill the power gap before it becomes a power grab and someone even worse ends up taking over and I just simply do not have connections with any American politicians to do that nor do I believe any current American politician is fit to rule