Somewhat true, though the US loosing for 30 years to peasant armies in the Middle East proves military technology hasn't changed as much as you might feel it has, but that wasn't my point. Disarming and giving all power to the elite is still neither preferable nor a good idea.
Labor gave up their economic weapons (unions) because times were peaceful and prosperous and their overlords promised they'd be safe, and now they are debt slaves working gig jobs with shit or no benefits. The monopoly of economic violence belongs to the FAANGs and Walmarts.
Doing the same for guns and the government is rolling out the red carpet for the jackboots to break in because there is nothing to fear. Giving up freedom for safety means you will get neither still holds. A government that doesn't righteously fear (as in healthy respect) it's governed is not of and for the people, but over and above the people.