I didn't read the link but I've been to enough terrible gun stores. I think my biggest pet peeve besides being in there and window shopping and the owner angry at me for doing so is any time when a potential ban might happen they jack the prices. There excuse "we have to make a living" Funny how most gun shops want to just sell guns and ammo and don't want to even try to sell anything else. Like custom kydex holster or hunting gear or better optics or even better apparel. Out of the LGS ive been too they are bullhead and im always surprised why they are able to stay in business.
My philosophy has always been "A Good Salesman adjusts prices as market indicates, a Great Salesman doesn't need its top sellers to stay in business"
Because of all the crud ive seen it has inspired me to start my own LGS. Nothing on the books yet but everyone has to start somewhere.