It's because ALL of the LFS forum moderators know the difference between a drama tantrum (the usual cause of "exit threads") and Kev's rather cynical sense of humour. Not that we always close the dramatic exit threads either.. it depends on the OP and what we feel about its tone, very often.
It's not just ME that hasn't closed the thread, Franky hasn't, Gunn hasn't and neither has Bob. Vic's left well alone too. If you think we're all a joke because of something like this, then I suspect that that's because you don't think in remotely the same way that the LFS forum moderators think.