I have nothing to prove but if you will notice that rpietila did in fact respond in this thread and did not dispute anything I posted. (or smooth for that matter)
I don't dispute anything BitcoinEXpress said. I can't confirm the existence of the claimed exploits but I can't prove that they don't exist either. The stuff he said about trolls being annoying and not being affiliated with the core team in any way (rpietilla isn't either BTW, he is just a vocal supporter) is absolutely true.
rpietilla may not be part of the core team but he is heavily vested and has personal ties to someone that is. As such he has access to insider information and is able to use that information to his advantage. He might as well be considered part of the team.