I don't agree with the profit part of this, but I do agree that he should be free to speak about it if he feels the need. Considering he has very doubtfully been given any information from RCMP I understand why he still questions everything. I also think everyone does deal with grief differently and if this is how he is going to deal with it, well....he really has every right to do so. It may not be all that 'classy' to everyone, but to him it might be the only way he can think to try and get some answers.
If he wants to speak, and feels the need to unload, (I don't blame him) it should be with a counsellor from this point on, not with the media. Every time he goes public, he's salting the wounds of the victims' families. There are free clinics on Vancouver Island, and perhaps RCMP victims services could lead him in the right direction.