Comment "Identification" is the problem in the first place (Score 1) 30
And 'Names' make it worse than 'Numbers.'
Trying to pretend the words on your account somehow mean that's who you are is the problem. This idea that if someone has "Michael Jackson" next to their post then its the actual famous person talking isn't something that can work.
It's better if that name next to people's posts is known to be just 'self-selected words.' Nobody will be fooled into thinking it's Michael Jackson, if there are 5000 different accounts claiming they are Michael Jackson.
Actual 'authentication' shouldn't be done based on your username or any other 'self-selected words.' Instead, there's a 'behind the scenes' unique identifier, and you keep track of the ones you care about.
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The problem becomes, not one of 'identification', but one of 'discovery.' How do you find the real one? You go to the official source, and they tell you who they are. Then you only care about that one particular "Michael Jackson" and ignore the rest.