I think this is where's GAF hardcore mentality is missing the point.
Most people sell their games and consoles. Collectors are a rare breed, but common here.
Not that many gamers are interested in Persona 5. It's still a niche franchise in the west. It sells well to its fans of course, but Joe Gamer isn't holding out for Persona 5.
MS is going for a specific user, who the PS3 has no value to them as much and possibly is interested in the XB1--it's demand is still high even after all the mishaps with their DRM.
This is a reasonable deal. Not everyone is a super hardcore Sony fan.
I think the main problem is this isn't even a good deal for most PS3 models. Sure, many are saying they wouldn't sell theirs personally, but even among general consumers who would jump at this deal when they can get more even at Gamestop and just buy an X1 there?