You are incorrect. It applies to all men of any age that are able to wield an "arms" which is any weapon a single person can operate and maintain which includes cannons, but not nukes.

That's what joining a militia is called. We can't help it if the government never calls us into service, that's their problem.

You mean the least racist guy on the planet? The first guy to let black people into his clubs back when clubs were segregated?

The first one is a non sequitur. The second is a lie.

They do paperwork and make personnel decisions. A half baked AI could do their job.