"you can't possibly win against tanks and bombers"
Not if you are fool enough to fight them head on, you won't.
Remember that famous picture of the guy facing down the tank in that square in China? That fellow, while brave, didn't stop that tank. The tank
driver did.
The tanks, bombers, and everything else that we "can't possibly win against" are crewed by men (and some women). The support for those tanks and bombers are done by men and women. They are our sons and daughters, brothers and sisters, husbands and wives, fathers and mothers.
Some will blindly obey tyrannical orders, but some will NOT.
This isn't the same thing as operating in some 3rd world pesthole where the entire populace doesn't speak our language, doesn't share our common values, and pretty much hates us.
Even the
Waffen SS (who took an oath of personal loyalty to Adolf Hitler) was not monolithically obedient to all Hitler's orders. Our sons and daughters in the military are a long way from that, and I believe many of them would work to thwart the orders of a tyrant, once the situation becomes clear to them.
There are a million and one things they could do to hamper or even foil operations while appearing to comply and follow orders. The Bomber that doesn't take off because of a mechanical fault, the tank which stops because some private in the motor pool didn't tighten certain bolts, these don't blow up/run over Grandma's house. They are as effectively removed from the dictator's hands as they would be if they were destroyed on the field of battle.
(just a couple of examples)
If it comes to a fight, tis not going to be unthinking, uncaring robots with perfectly working equipment gunning down a bunch of rednecks lined up with their "squirrel guns". It will be MUCH, much more complicated and complex than that.
And. remember, our side does not have to defeat theirs, IN BATTLE, in order to win. Anyone who thinks that individual arms will have no utility in that kind of fight is simply, delusional.