Speaking for myself, it's 100% not defeatist, it's standing up for myself, working with what i've got, actively pursuing what i want in life.
I want money and to be able to do the things i enjoy. I want a good job which gives me freedom, flexability and pays well. To achieve these things, i must act a certain way, copy, pretend and supress.
This is not accepting defeat, this is being pro-active and taking charge. I am making a choice.
I tend to be grounded in the real world around me. Noble gestures of being who you are and standing up for your right to be different and saying everyone else needs to change as much as you etc etc don't really work in the real world. Sure maybe in the long term, maybe they help long term awareness or furhter a cause, but for you, right now, you're still the one being laughed at, or ignored, or constantly in arguments, or passed for promotion, or getting sacked, or having no friends.
I'm the one manipulating society into letting me into their group for my own purposes, even though i have little respect or interest in what they're doing.