> nobody at MrBeast burger is falsely claiming to be MrBeast himself.
Nobody said that they were. You must have forgotten to read the thread. When 'MrBeast' comments on YouTube to those who pay for a subscription to his channel, it is claiming to be MrBeast, however. But is it him? You completely understand he doesn't have time to flip burgers, and thus would never expect him to, so why do you think he has time to chat to random internet customers?
> You must have forgotten to read the thread
There's no need to be rude.
The issue here comes down to money and therefore reliance and damages. Nobody's paying "MrBeast" in response to his (or his delegates') YouTube comments. So there's no material reliance and no damages; the 4th and 5th elements above aren't satisfied.
On the other hand, people are paying money thinking that they're talking to the model herself. Thus the 4th and 5th elements are satisfied, in addition to the other three.