If Bidan were to rip off his mask on live TV most normies, i.e. most people, would think it's a joke/sham & not even conclude the guy they've been watching since 2019 is a masked man.

For them the mask ripping would be the hoax, not the person.

Fake Biden would be real, mask off would be the hoax.

Its all about frames of perception and expectations.

Who on Earth would think, expect or believe that the man they've seen for 50 years was replaced by a double in the last 2 and ran for pres as an imposter?

They'd just expect old Joe to show up the next day like nothing happened.