I am not sure if you refer to some particular thread, but I personally hate posts where OP asks the bunch of QL anonymous to evaluate his chances and to confirm whether or not he can find a job in Qatar, and how much he will be paid .. .. such posts deserve to be mocked, and especially when it's posted by "highly educated westerner" with somewhat PhD degree..
as the question, so the answer...
Another reason for "mocking" is that sometimes people just bored and want to have some fun.. QL became much more decent (and therefore boring) over years.. I am sure, Smoke and some others remember crazy days when every other thread could have turned into endless fun and laughter in a second.. I remember making huge efforts not to LOL like crazy at the silent office in the middle of busy working day, when the entire "QL Fun Team" would step into the thread...so sometimes people are just bored, and make fun without any evil intent.. just ignore them...
.. and I agree with Spock on "exceptionally dumb" part ..that was good one, Spock..