I do like that this mentions Roy being close to Jason as they did get along during his Titan days. But that was after Roys' drug period, in fact Jasons' first mission was the one Cheshire revealed she had Roys' child. She does this in front of the two. It makes me incredibly annoyed that Ollie would think Roy introduced Jason to drugs and that resulted in his death.
Not only does this show that he never moved on from learning of Roys' past addiction but it's incredibly naive for a guy like Ollie. Jason lived in Crime Alley. He had the chance to get addicted to drugs, in fact his step-mother was an addict. In one version she died of an overdose. If Jason did get addicted it would have been long before Roy met him. But Jason was the sort of kid that didn't want to show weakness or need anyone/anything on the streets. Interestingly enough there was another parallel between the two brought up with Ollie and Bruce later on.
I'm actually amazed that Hal is coming off as the mature one putting up with Ollie. Granted I think this is back when he was trying to force Ollie back into the land of the living but in this scene he comes off well.