""Bar Abba" is Aramaic for "Son of the Father"
Sorry but that's just a useless sophism in this context and a straw man argument. You understood what I meant - "vox populi" could be tremendously wrong, especially in difficult times.
Just like Pilatus became the emblem of a politician who doesn't want to manage a situation and cowardly thinks it's just better to listen to the polls.
The actual historic events could have been different, who knows for certain - but how they were describe they became paradigmatic, and as such are used.