I've made a couple of video clips and published them under cc-by.

Say someone (A) wanted to use my clip in a bigger project, but couldn't give me attribution because someone else higher up in the bigger project (B) insists on not crediting any outsiders.

Would it be wrong of me in this hypothetical to demand that I either be attributed or they don't get to use my clip? Should I even feel guilty?

Bill, like anyone's going to want to use my clips of ducks quacking or sword waving.