Their vision of freedom and independence is not freedom or independence
"Urban" aka liberal culture openly advocates surrendering all liberties for security and safety. Surrendering all libertarians to achieve "social justice". etc
From free speech, to the ability to engage is commerce the "urban" culture believes everything should be regulated, controlled, and approved by a central authority
>>Eventually, some group of people will decide to take up armed insurrection,
Unlikely, the most likely scenario is that the "urban" culture will attempt to use people with guns they employ to violently seize the guns from people they do not employ.
Eventually, some group of people will decide to take up armed insurrection, and that will be the (tragic) end to the issue. The urban population doesn’t get any of the culture around guns at all, and their vision of freedom and independence just doesn’t line up with yours.