Batman the “superhero”

This was just in the new Flash movie (or am I mixing this up?). There's a line pointing out that if Batman really wanted to change things he'd just use his billions to end poverty.

They also mentioned the in the Harley Quinn cartoon.
- Ah that's probably the one I was thinking of then.

eh, there's probably a scene in the show where they like blow up a hospital for no reason at all just to make them horseshoe theory

Act 1 : villiain is volunteering at a childrens hospital.
...
Act 3 : villain is blowing up the hospital.

They make villains who’s goals make total sense and are something to root for, so to balance that they make the villains kill innocents just to make sure the audience doesn’t accidentally side with them.

Poison Ivy's explicitly stated goals are mass genocide, how is that something to root for. She's not advocating for moving to solar or nuclear and reducing emissions.
- That's the point. You have a Villain who wants something good (stop the destruction of nature) and then pair it with something very evil (genocide). It's a very common trope in media. It leads to the "Hero" of the story being able to defend the status quo again and again without ever challenging it.

I didn’t watch Black Panther but wasn’t that a similar thing where the “bad guy” is right but like he kills innocents to cement himself as the bad guy of the film?

In the world of Black Panther, Killmonger's plan to arm African descendants across the globe represents the beginning stages of the Pan-African ideal, where Blacks all over the world fight for liberation by any means necessary.
He's a villain, he murdered at least one unarmed person in cold blood and his plan was to use advanced technology to wage a bloody and violent uprising. It was to take control through power and death.
Also I think T'Challa (the protaganist) was a fed or had a deal with the US
- Also I think T’Challa (the protaganist) was a fed or had a deal with the US
  He was literally the diamond warlord living in glass tower full of hi tech while his subjects waded around mud streets, he also supported tribalism and superstition which divided his people so he could rule them, and let's not forget the endangered species animal abuse and weaponisation. Somehow exactly like some of the US comics villains from 60's, but spinned at sympthetic.