Earlier quoted context omitted.
It's not that various forms of discrimination don't exist. It's that some forms are considered more "just" than others. If you are born with a low IQ, people will certainly judge you for it. You will also be punished for it, for example by scam artists who will take advantage of you. Then people will respond with stuff like "well, if your dumb enough to fall for that you deserve what you get". So I think boiling down…
You... are aware that there's a huge movement against treating people with low IQs like they're subhuman, right? There's a thread currently on the front page in which people are arguing about whether or not the word "retarded" should be used as a casual insult. I don't understand what your end goal is here. Either we talk about imbalances or we don't. And if we do, we have to talk about specific imbalances, or else t…
My peeve really is the "straight white guy" meme which seems to suggest "hey, you are straight and white you have it easy" which is necessarily going to alienate huge numbers of people from the debate.
I think the intelligence example is especially important because intelligence is such an amazing tool for overcoming over disadvantages.