Should the value of bootstrap_expect be same across all servers?

from the docs:

Since this value is related to the cluster and needs to be set on each server, I didn’t find any docs around what should the value of this be per server. I understand the consensus part, but for it to work as expected, every server needs to have the same value for bootstrap_expected right?

But at the moment this is not enforced by nomad as a whole, what bad things can happen when the bootstrap_expect is different for different server peers in a nomad cluster?

Related threads:

Related: Changing bootstrap_expect at runtime · Issue #1458 · hashicorp/consul · GitHub