Yeah, that's a per store thing. Dude that initially came up to you probably wasn't even in that dept.
The BB near me is good, but it's one of the few I can say that about. Most are just terrible.
My brother-in-law actually works in the A/V dept and he knows his stuff pretty well, but is sold on all the Dolby Vision stuff to the point he will only stream stuff that includes Dolby Vision even though the quality of the stream can't be as good as an actual BD.
I actually worked for Circuit City when they died. My store was pretty great, but again, those places are only as good as their management. Most are just told to sell as much as possible and add on accessories and installs to make as much margin as possible.
Magnolia stores are different. They actually do large high end installs. My brother was an installer for them for a while and he did some pretty huge money installs during that time.
Too bad a lot of the mom and pop shops are gone. I would much rather spend my money with them, but can always get better deals online.