OK, I'm only on page 1, but I have to comment.
I'm the person Dotty quoted (or if she didn't quote me, I know I have said it). I did say "try not to use," not "don't do it." I say that because of discussions (sorry, can't find the threads, but I do remember mods stepping in) in which it was determined that on this forum, we should be polite and give each other the benefit of the doubt. "What an interesting assumption" is slightly combative and, moreover, meant to shut down conversation, which is not the purpose of this board. If you think someone is making an unfair assumption, you should ask for explanation of their comment and/or explain your position more thoroughly, not try to lay the verbal smackdown on another poster.
Edited to add: Because mods were the ones saying that it generally shouldn't be used on this board, I felt "we" was appropriate because mods set the tone and culture of the board.