luvvie (ˈlʌvɪ) or luvvy
n, pl -vies
(Theatre) facetious a person who is involved in the acting profession or the theatre, esp one with a tendency to affectation
[C20: from lovey]
For some of them it's very much theatrical acting, Boris doesn't do any of that stuff. You may not like it, but what you see is what you get.
People close to him say he is in fact quite a shy person.
Though I may sound it, I'm not actually his #1 fan, but I find your conclusions & those of your twitterati cohort, based on a few second of snatched video, astonishingly presumptive.