Every one knows Crimea’s “independence” is a legal fiction created to facilitate its rapid admission into Russia. But you can say this about the Russians: they’re sticklers for legal norms.
The Tartars seem to have boycotted the vote. They have a longer history in Crimea than the Russians. The Crimean Goths were there from at least the third century (if not earlier) and were still around speaking their Germanic language in the late 16th century but seem to have disappeared.
Yesterday's vote has about as much legitimacy as one of Napoleon's plebiscites.