A good parallel would be that when Brexit was occurring almost everyone with the opportunity was renewing their second passport. The only friend I knew who outwardly supported England leaving, was of course, renewing his duel-Irish one.
Whoah, your friend is a badass! I also didn't know Ireland still allowed duels. Do you know if it's just short swords or what? Cool benefit for his dual citizenship. (sorry, sorry, had to).
Sadly members of my own family openly voted Brexit, despite my grandma, my sister and myself all being EU immigrants at the time.