GoT (don't come in if your worried about spoilers obv)

[Sharp]

The thing was the last targaryen... Burn them all... Was legitimately mentally ill and with a history of insanity and sadism. Dany arcing toward that to make her a villain isnt the issue, I honestly think it could have been a good move fo the character if I were done well. My issue is with how she turned on a dime

I understand that her advisors being picked off (jorah/missandei) or losing her trust (tyrion/varys) would enable the worst to come out in her, but she's still proved time and time again she's been on the side of the people. Cersei even seemed to want to undermine it. The speculation was actually that cersei was going to destroy her character by making her look insane by tricking/provoking her into doing something so destructive.... But instead of being the cunning manipulator who managed to be queen, she was practically the declawed victim... But that's my gripe with cersei

For Dany, to echo what people here already said, she didn't really seem amply set up to murder civilians like that. I would've believed her going straight for Cersei (assuming cersei was going to go down like a joke) and killing the civs in the red keep, but this was just for the sake of the cinematography

It did look cool