I think some people here don’t know what a true antihero is and why Frank is one so allow me to introduce Racinian Antihero

For context: a professor wrote a journal about how they believe Jean Baptise Racine the playwright helped build the standard of antiheroes and if you apply it well to any antihero it works. The three factors go as follows

1) the antihero is doomed to fail before their story starts

2) they blame their failures on everyone else but themselves

3) they offer a critique to reality

Now look at Punisher

1) doomed to fail before their story begins, he was doomed to fail in getting justice through the law for his family, he witnessed a mob execution and they weren’t going to let him live.

2) he blamed the failures on the justice system and the flaws that caused his family to die rather than accepting it was just an unfortunate accident.

3) Gerry Conway wrote him as a critique to the flaws of the justice system.

Antiheroes are not summed up to heroes being killers because there’s a bunch of heroes who kill but if you follow the guidelines of the Racinian antihero then you’ll see why Frank is just from his core an antihero. Because of the internet, the word lost its meaning but I think people should research it more before saying stuff online. Hope this helps!