@sun@vriska@realcaseyrollins he's from the 90s period when comic artists got out of the bootlicking phase and started writing anti heroes.
viet nam war vet comes home, goes back to being a civvie, then some gang banger shoots his wife/daughter and john wick decides he is taking that personally.
calling him a terrorist is not entirely wrong because in punisher max one of the bangers finds out they have obtained the notice of frank castle and the whole room panics "HE TAKES OUT GANGS STARTING WITH THE BOSS AND GOES DOWN" implying that if, somehow, you have done anything to be noticed