They voted for independence, and so I think that the shitty, illiterate, anonymous Wikipedia editor who added this unsourced addition was grasping for the word "secede" rather than "succeed":

https://en.wiktionary.org/wiki/succeed#Etymology_2

https://en.wiktionary.org/wiki/secede#English

There is really no definition of "succeed" or "succession" that would describe what has happened here.