Thesis: Anyone can have impostor syndrome for any number of reasons. Privilege is orthogonal to how one feels about themselves.
Thesis2: Anyone can be depressed for any number of reasons. Privilege is not a deciding factor.
The trend to bash on “privilege” is ill targeted. Bash on people’s actions. Bash on their misconceptions. Bash on their hurtful words. But their privilege? That’s just tilting at windmills. “Privilege” will never go away AND it is not the cause of the thing you are fighting. The world is a bit more complex than that, thankfully.
[EDIT added at 2013-12-20T00:38:25+00:00]: The cause of the thing you’re fighting is the environment which gives rise to that privilege. Maybe I’m splitting hairs, but:
Please don’t attack my whiteness or maleness or (very) not poorness. But the fact that those things, a priori, give me a helping hand (whether I ask for it or not, or whether I even think about it or not) is not how a just society would work. Let’s fight that.