By default subcribers are linked to mailing lists not campaigns. Therefore it is natural for them to be excluded from the mailing list when they unsubscribe and still be kept in the subscriber one. So far there is no other out of the box way to unsubscrybe. And since your first and last name are not required for a successfull campaign (the fields are optional), the name change is not reflected.
Ivan D. Dimitrov
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