It is settled in a sense, that there's no solution besides destroying Russia as a state that would result in return of Crimea to Ukraine. As OP said, whether we

It is settled in a sense, that there's no solution besides destroying Russia as a state that would result in return of Crimea to Ukraine. As OP said, whether we recognize Crimean referendum or not, is irrelevant, so bringing Kherson into conversation does not make much sense. Polls in territories occupied after 24.02 would not show the same level of support of the referendum results, as it happened in Crimea.