Um...it's not free:

"In order to play with this additional content, it is necessary to first purchase game disc or full game from PlayStation®Store that is sold separately and update your game with the most recent online update."

It's basically a ticket.

Or it's a description related to the DLC.

thanks

edit: seems like sony a**holes like to cancel such glitches afterwards

Assholes? They're not obliged to honor a glitch on the store, you're taking advantage of something that you're not supposed to, be glad that they don't ban like Microsoft does.

are you a gamer or some greedy sony ceo? besides that, there are enough shitty things that sony has done already, no matter what other companies have done!

Anyway as I explained this is not a glitch, but something like a reminder.

A reasonable person, if i get a freebie then i'm ok with that, if the company decides to revoke the game then i'm also ok with that, the whole "fight the system, for the people" is not a valid argument, you didn't pay nor it was offered to you, you don't own it. And yes, they're all "evil", Sony, Nintendo, Microsoft, Valve, Gog, etc, some are less evil than others but in the end they all want the same thing, (your) money.

Btw, i'm sure that Sony has let the gamers keep some games that were available for "free" on their store...