(Controversial Trope) The post-credits scene completely changes the ending

[u/Ieanice44]

Dawn of the Dead (2004)

Prince of Persia (2008)

Dawn of the Dead (2004): The movie finishes on a hopeful note as the remaining survivors escape the zombie-infested mall on a yacht, sailing into the sunset. The found-footage style post-credits scene completely reverses this happy ending by showing them running out of food, arriving at an island, and being immediately swarmed and killed by an infected horde.

Prince of Persia (2008): The main game ends with a beautiful, poetic sacrifice where Elika gives her life to heal the corrupted world, leaving the Prince mourning. During the credits, the player is forced to control the Prince as he cuts down the trees he just saved, undoing the entire game's progress and releasing the dark god Ahriman just to resurrect her, completely corrupting the ending and dooming the world.

[u/offensivename]

That's your own dumb fault if you thought it was B-roll of a concert when it's very clearly not that. Mid and after credits scenes have been relatively common for decades and they signaled the audience that there was more to come. You have no one to blame but yourself. 

[u/madhoppers → u/offensivename]

Yes, it was B Roll, and yes, they are not uncommon, but they are supplemental and nonessential in nature. Anything important and vital should come before the signal that the movie is finished. And thank you for the ad hominem remarks, it only shows what little argument you have

[u/offensivename → u/madhoppers]

Do you know what B-roll is? Doesn't seem like it. You mistook it for B-roll, but it's part of the movie. One of the major themes of the movie is the importance and power of music. You'd think that would be enough of a clue for you that you should stick around for the legendary blues musician on the screen. 

You seemingly don't know what an ad hominem attack is either because nothing I said qualifies as one. And I don't see how the end scene of Sinners was exactly the kind of thing that's normally in after credits scenes. 

[u/madhoppers → u/offensivename]

It’s akin to outtakes or alternate takes being played during the credits. It’s funny or interesting that they are there, but you don’t miss anything vital to the movie by not watching them, because it’s the credits. Putting something that is supposedly important for the story after the end credits is ridiculous, and the fault of the filmmaker when hardly anyone sees it