The fact that someone literally said that all of Less Wrong should be ashamed for allowing "Ayn Rand Derangement Syndrome", however, and that that person went on to suggest that I and everyone else who'd dare criticise Rand should be downvoted,

Again, mischaracterization of what I wrote.

My original post: http://lesswrong.com/lw/iqq/a_game_of_angels_and_devils/9tat

I suggest that's one reason you're downvoted - mischaracterizing what others say in a self serving way.