You know the worst part about Bruce not knowing what really happened in the warehouse, and so blaming Jason for his death, and as a result, Sheila's? It's knowing that if it were anyone else with Sheila in that warehouse, Bruce would not have rested until he figured out what really happened.
He would put on his "World Greatest Detective™️" hat and investigate the shit out of everything. No stone would be left unturned. Somehow, some way, he would uncover the exact details of exactly what went down.
But it's Jason, so he runs home to Alfred, and Alfred, forever Bruce's number one enabler goes "Welp, can't say I'm surprised. I could have told you he would get himself killed." and for Bruce, that's all he needs.