My new fixation is Jason Todd

"Richard for the last time, Kent moving on from his weird friendship with father and getting married does not qualify you as a child of a divorce."

"It felt like a divorce to me–"

"Listen I'm all up for dragging Batman to the ground (not that he really need help with that)." Jason intervened. " But, who are you to judge weird friendships again? Ever looked at you and Jon? For a while I thought you two were glued together by the side or something."

"You should see when we were in the league." Tim said. "Every superhero and their sidekick would look at them and say 'Hey Jon– Damian.'"

"Damian–Jon." Damian rebutted maturely.

"No, no, I'm pretty sure it was Jon–Damian"

Damian made a face.

"Said the Superboy sidekick."

Tim narrowed his eyes.

"I was never–"

"Uh-huh."

"Superboy sidekick I was–"

"Keep telling yourself that."

"The literally the leader of the young justice–"

Jason made an amusement sound at the circus forming which grabbed Tim's attention to him like a very pissed off shark.

"What are you laughing at?" He shouted. "You're friends with Bizarro."

Jason stopped laughing and looked seriously at Tim, the most serious he ever looked at him before.

"Bizarro is the little brother I never had."

Damian and Tim looked at him.

Jason looked back.

"Okay–" Said Dick, but Damian was faster.

Also Jason:

And it's funny to me that people will latch onto things like Jason saying he doesn't care about the world, and then turn around and ignore that at every point in Under the Red Hood, Jason is placing himself as just one of many victims.

He doesn't just view Bruce not killing the Joker as "proof Bruce doesn't love him". He views it as allowing the Joker to kill more people.

This is textual! He literally says "I thought I'd be the last person you let him hurt."

He brings up Barbara in his UtRH speech! The articles we see him holding in Lost Days specifically mention body counts during the Jokers escapes since Jason died. Those are featured by the comic for a reason.