Really seeming like a case of you preffering to be morally right (in your mind) than being factually correct. I know you'd love for a way to justify significantly less guns in America without having to be a "it's a 200+ year old piece of paper, why can't we just throw it out?" person. But this isn't it.
Well if you want to be factual, I don't actually argue that the second amendment was originally about personal self defense (iirc the majority of states did not say that in their charters, which is where the second's language is pulled from, a mashup of state laws of the period). There is still some legitimate debate around intent, but not all that much. I'm not going to sit here agreeing while you're messing up what I'm saying, and trying to tell me what I think, dude. I'm surprised people even try that with me anymore, tbh.
I do admit that I don't at all agree with a citizen militia as a bedrock right. But that's opinion and not a factual matter. It's going to be on the books for the foreseeable future anyhow. But in either case, I definitely advocate separating a right of self defense from the vague inference it now rests in. That's true whether or not the right to keep guns exists or doesn't. And I concede that there is no way we can have a right to self defense today without including guns, since it's the equalizer for so many vulnerable people.
The belief in self defense follows from American first principles (life, liberty, pursuit of happiness level shit) very directly. When something follows from American first principles, it cannot be mere post hoc rationalization of a position. It's not a coincidence that I'm arguing from that principle, that's a product of consideration. This is what I mean about being philosophically sound. The moral soundness comes from the possibility that one day, it may not be necessary to self defense to have the trigger-ready ability to launch metal into flesh to properly assert a right to self defense. That technology does not exist yet, but one day it likely will. And at that point, it becomes a moral imperative to reduce the availability of violent means. Linking self defense to modern military arms prevents arms reduction, and doesn't leave arms reduction as an option.
I do understand that it fits handily together that self-defense = guns = overthrow the gubmint and that's just the way many people want it. I disagree and I think that's driving a lot of gun fetishism and distrust of ourselves and constantly refueling the black market (every American gun used in a crime was once possessed by a "good honest hardworking law abiding citizen" after all). But that's a disagreement that will keep. I do think that gun control is a losing issue in America and will be for a long time to come.
But I insist that you get my argument right before you flippantly criticize it.