Err, I think the JJ desecration warning is left behind from the time when his punishment was that you dropped dead. It was sort of needed because you'd get no warning, no way to know what's coming other than having desecrated the altar and you'd click on something and drop dead (50% chance). Was way more severe than other gods (or anything else in the game) so noone could realisticaly expect it.
The current desecration penalty is sorta severe but not that severe that it'd need a warning (personally I've gambled on it and took it to the face rather more often than surviving a GG penalty). It was changed, I believe, due to considerations that the old penalty was way too much of a gamble for the reward and pretty much ment you're down an altar as far as desecration is concerned which just wasn't the case with any other guy.
Also, why and how in the world is this discussion still going on? Don't make me textwall you guys to death, because if I do there'll be a nice article present in the thread which settles it for anyone who reads it covering everything. Then whoever keeps it up is either iliterate or childish.
I almost got pwned by Shifty Brickwork!