"A sales tactic. Interestingly there are now a large portion of gun buyers who are first time buyers who gave up being anti-gun as a matter of perceived practicality. I hope they get training"

Actually they don't need to advertise, as soon as the news comes out, they are deluged with customers.

Training? Highly unlikely. Most people facing a home invader are so shaken they probably couldn't hit the broad side of a barn. Hands shake, pulse hammers. Those on for example SWAT teams need to undergo biweekly desensitization so they can function in that kind of emergency' miss ONE such session and they can't go to the next emergency.

A lot of the Hairy Chested Administrator of Frontier Justice stuff is just conceit. Facing a threat to one's life takes more than conceit and most people aren't up to it.