I think you maybe misunderstanding. I mean sure those are things libertarians who are also 2a supporters rail against and fight for those things, but yeah the people who are being targeted the most are the people need to exercise their 2a the most. If the only people armed are faciest or adjacent then only their rights and interests are protected by it. Without the 2a only the states rights and interests (police, DeSantis, etc) are protected with guns.
Used to be a bigger fan, but for the same reason I became more libertarian I’m not so sure it’s a practical philosophy. The biggest issue is that as soon as someone decides what is or isn’t good genetics you get a lot of bias. The majority of the human experience is social anyways.