Seems like it would be more useful to have some kind of more general labelling system, where you could be 'verified' as (say) a famous actor, and/or musician, or whatever. Then people could distinguish not only the famous Matt Smith from the unfamous, but also the painter Matt Smith, and so on.
That's why https://en.wikipedia.org/wiki/David_Walliams spells his name with an A rather than the more normal I.
Michael B. Jordan has the B because Michael Jordan has a SAG card from his movie work.
I mean, people will jump through flaming hoops for some stupid clout / prestige, but I would think there's some financial motive to all this. Could be that once you're verified on various platforms, companies will start to call you down with ad placement offers.