Does it mean that if I migrated for some period of time in order to look for better life, then I shouldnt be allowed to vote?

No. It means that some things shouldn't be voted on at all but are a matter of sovereignty. Should I be able to vote on what you're allowed to do in your bedroom? How about all of us voting on how much of a raise we give to ourselves from your wallet? (this is theft, but we call it taxes instead) The brainwashing of society is severe and as a result, humanity consents to the insane.