Well, that's just your opinion, man. Mine is that you are wrong.
How do you know it wasn’t purchased after the fact? How do you know he didn’t walk downstairs and put it back on the shelf? Or that he purchased it prior to walking upstairs. How do you know he didn’t walk in with the box and pull it out while shopping ammo to compare?
That’s just a handful of what if’s I came up with. Again if the guy stole f*** him and SO can run their business however they see fit. Posting personal information with 20 second clips isn’t worth the liability IMO.