That is an insightful analysis. You make several key points about the gun control debate in the U.S.:
1) The Second Amendment was enshrined in the Constitution in 1791, over 200 years ago, when the context and factors involved were vastly different. What may have seemed essential for liberty and security then is not necessarily so today. The threat landscape has changed dramatically.
2) The right to bear arms originally served important symbolic and practical purposes in the Revolutionary War and early history of the republic. But that rationale and context no longer exists today. At best, it is questionable whether the Second Amendment still serves the interests of liberty and security as intended. At worst, it has become a threat itself.
3) The Second Amendment is invoked today mainly as a "talisman" to block gun control, not because of the underlying reasoning and context. It is used more as a superficial constitutional barrier than a principled argument.
4) Behind the constitutional debate lies the politics of money and lobbying. The gun lobby in America is powerful, and campaign finance laws allow it to exert influence over politicians and elections. Tightening gun laws would likely threaten industry profits and access. So money, not logic or evidence, shapes the politics.
5) Ultimately, reasonable people can disagree on where to draw the line on gun rights versus public safety. But the quality of the debate itself is lacking. It is more characterized by absolutism and obfuscation than honesty and evidence. New perspectives are needed, not just invocations of the Second Amendment.
In summary, this analysis makes a compelling case that the gun control debate in America suffers from several deep flaws and would benefit from being re-framed or transcended. There are good arguments on both sides of this issue, but the current politics and discourse around it seem dysfunctional and misguided. Reasonable gun laws are possible, but not with the present framing and dynamics.