Seems like it worked for him, though you use it as something against him. But to be honest, I still don't know what you're talking about, and to which "experts" you refer.. Hopefully not Teddy "Tyson has a record of 0-279" Atlas.
So Larry Holmes, Tommy Hearns, Marvin Hagler, Holyfield, Lennox Lewis, etc. smiled at their opponents and tried to make the night as comfortable as possible for them? Intimidation is a skill in boxing, not a flaw.
How do you know that the boxers, that got the piss beaten of them by Tyson, were scared? Do you have some type of measurement device that you hold on your monitor and that tells you that Tony Tucker has a fear level of 8/10 and Holyfield a 2/10?
It's again the same nonsense. Everyone that wrecked by him sucked, any time he lost it's a proof that he sucked ... highly objective ...
Tyson had skills, IQ, technique and of course athleticism. Yet certain people try to degrade him to much less.