Well, I can't speak for him, but I think this might be a reasonable attitude to have: Either what we're witnessing is the fulfillment of prophecy or it isn't. If it is, than it doesn't matter what we say or do about it, it will continue to happen. If it isn't, then it truly is, as Mr. Raimondo describes, a bunch of wackos who are very liable to do a lot of harm for the sake of nothing. In that case it would be extremely irresponsible not to try to prevent it from happening, no?
How would you propose to know the difference? If what is prophesied happens, then the prophecy is fulfilled, right?
How would you propose to distinguish between a prophecy that was (supposedly) fulfilled too early and one that was fulfilled in its proper season? (And how is that even possible?)