Damian derailing Tim has more to do with Tim, his fans and DC than Damian.
Dick moved on, Jason moved but due to whatever reason Tim couldn't let go of Robin. Heck his fans are still calling for Damian's head so Tim can go back to Robin even today.
Even after a successful solo as Red Robin. Tim was derailed by nostalgia and his fans.
I agree with @Blue22 Damian didn't derail Batman He carried on as always even taking on new sidekicks and the story moved forward.
Jon has moved on so he didn't derail that hero
Flash, Ollie non of them have to be negatively impacted it just depends on the execution. They find their own paths.
Progression is go but I don't want nor do I think it's wise to replace Iconic characters like Clark or Bruce.
Fans will always have something to complain about. Superdad got complaints mostly because he replaced Nupperman and the Superwonder ship sunk.