generic attitude suitable for everything that claims to have a noble end in mind.

Nope. For instance, abstinence-only sex education claims to have in mind the noble end of preserving the virtue of the young. I do not particularly hope that it succeeds in its aims, because I disagree about their nobility.

Regarding what the "Arab Spring" was trying to do as a noble end (as opposed to one merely claimed to be noble) says something not altogether trivial about the values of the person who so regards it.