Random Voting Stage (RVS) is hugely productive where little to no information is available, Zambo. It helps move the game forward and can cause players to react in revealing ways.

That being said, once RVS is over and there is enough information to work with based off of player interactions, tells, claims, etc... that's when it's okay to say "Hey, this is not a random vote" but this is usually not necessary as it's evident when RVS is over.