I like the fact that really they're both right here. As it happens Bruce is alive and since Tim finds that cave he must actually have some real clue even if he for some reason won't tell Dick about it--maybe for story reasons.
But at the same time, the way he's snapping at everyone and being paranoid does indicate that Dick and his friends are right that he's not in a right state of mind. He can be right and unbalanced at the same time. Which from the rest of it looks like the theme of RR in a way. Yes, he's right Bruce is alive, but a lot of the decisions he's making are going to haunt him.
And most of all where Tim is wrong and Dick is right is that finding Bruce will not make Tim Robin again or make things the way they were before Bruce 'died.' Especially given what he's doing to find him.
But I like that when he puts it seriously as asking Dick to trust him as an equal and a brother, Dick respects that bond so much (and probably knows how he'd feel asking for that) that he lets him go. And I think Tim will remember that.
Re: the whole therapy thing, as I said in another thread, therapy can be great and in some cases it's exactly what someone needs, but it's not like antibiotics that you just administer to somebody and it knocks out all their problems and turns them into happy (and therefore acceptable) people. It's not that I don't get how therapy might be a good thing with the right therapist for Tim, but I hate seeing as strong and understanding a support system as Tim has brushed aside as useless because they're not therapists.
Tim has lost a ton of people in a short time. Him being angry/confused/sad is a given until he comes to terms with it, however he does it.