It's a Singaporean thing, really. Without going into too much detail (because i'm supposed to be working, I have a ton of things that were due an hour ago, and i shouldn't be here), I understand what you mean. Just looking at any of the threads here that have had some form or other of conflict and you can see this occuring.
But in this case, having known RO-RO(lol i can't believe i'm saying this) for more than 2 years, I can safely say I know him to a certain extent. And from what I know of him, he said what he did in the manner he did because he simply doesn't say things straight to the face. He implies, gets you to infer, and conveys his message without explicitly saying it. Of course, it doesn't always work out. I think, no I believe, he said it in this manner as he felt it would be more appropriate than to bluntly say that "somethings shouldn't be aired in a public forum" as it would seem as though he was doubting the intentions/integrity of any of the Exposers here.
Ok this is the chapalang version, i have to go back and chiong that stupid $7+k powerpoint I'm supposed to be doing. Pardon any typos/mistakes.
of course, maybe he just didn't realise that was the message it implied (that it was a platform for denial), cause i didn't realise of it either until you said it. haha maybe i'm just slow.