Leaders don't decide. They propose values (such as a block of transactions). There may be multiple leaders with different proposals and participants get to a co

Leaders don't decide. They propose values (such as a block of transactions). There may be multiple leaders with different proposals and participants get to a consensus about which proposal gets accepted for a given slot. You speak authoritatively, saying "this is a common misconception", but blockchain is a distributed consensus protocol and I don't think you are familiar with multileader and leaderless flavors of distributed consensus.