It's really your position that is untenable.
I think that argument has some basis in history (e.g. Nazi Germany), where the tyrannical government slowly got worse and worse without major internal revolts. On the other hand, there have been times where the people snapped and revolted all at once.
I think that what you describe as the boiling frog scenario would be the best possible strategy for a government that is concerned about its policies being forcefully rejected if implemented all at once.
This was an impossible situation from the beginning.
> South America guerrillas are unbeatable.
Bolivian insurgency failed, Guevara died. They don't always win.
The thing of it is the arms involved at the outset are irrelevant. You can't coerce a population largely unwilling to be controlled. Arms (including bombing devices) inevitably make their way into peoples hands. In the event of martial law things would fall into such disarray it's unsustainable.
I take issue with the idea that a population needs to be armed a priori with a specific set of weapons in order to repel a "tyranical government", which is a kind of boogeyman idea if I ever heard one. A tyrannical govt, comprised of a minority of people, versus the U.S. scenario is not a likely one. You'd sooner see a civil war, and even that's incredibly unlikely. But then I suppose you'd see gun regulation as evidence of tyranny.
The most tyrannical govt I can think of is the Chinese one and they have popular favor with their people. The HK situation shows that popular dissent is powerful with or without weapons.
Their most effective weapons tended strongly toward IEDs and RPGs rather than longarms.
If a government is unilaterally in complete control of all people at all times, full stop, then there isn't any real freedom, is there? You'd just be subecting all of society to the whim of whoever had enough money and/or guns aleady to have taken power.
But this is no place to have that discussion. Besides which, most people who express the opinion you have are not interested in contemplating any other perpsective any way.
The government doesn’t have to be in unilateral control for us to admit that citizens would have a very difficult time fighting the extremely well funded and trained military. (For the most part, they wouldn’t need to anyway, they have control of something far more powerful... banking, they’d freeze your funds and you’d be done for).
It doesn’t follow that a government that you can’t fight via conventional means gives the populous no recourse. Voting rights are still the law of the land here and civil disobedience has been effective in the past.
Secondarily it could be argued (very easily) that second amendment in the USA is about the right to maintain well regulated local militias, which at the time would have been populated by yeoman farmers bringing their own weapons.
Historically this is relevant because the revolution was fought by exactly such a set of militias on the continental side, and the British obviously thought this was an illegal action. So they needed a clause “this thing we’re doing is legal and legitimate.”
Buut there’s a difference here between a militiaman with a musket that can fire maximum 3 shots per minute, as part of the local defense force, and an independent yobbo with a hundred of round per minute assault rifle.
But no one focuses on the part of the second amendment that pertains to ‘well regulated militias’, it’s almost as if an industry that makes something with a limited audience outside of military and law enforcement has an agenda and is influencing the debate.
E.g. imagine Hawaii seceding from the US. Does it take equal military might?