I've never used Aspergers an an excuse to the effect of saying, "I can't do this, because I have Aspergers".
I refused to go to the comemcement cerimony when I graduated from college and again when I finished my master's. My reasons for not going was, "people and parking and nobody knows whats going on and relatives" which is lots of anxiety and not feeling in control/prepared for whats going to happen. So, yeah, I think that's kind of an Aspie thing.
I am allways afraid tho, when I tell people that I have Aspergers, that they will say that I am making up and excuse and that I'm really just lazy, stupid, un motovated, AD(H)D or something.