"Without any training or experience, this guy applied for the job, got the job and fooled people for years by just putting on an elaborate show.."

"The fact that he was standing on stage next to a lot of important people put him beyond question in the minds of most people. Those who really understood that what he was saying actually made no sense were ignored. And now we have this South African interpreter doing the same thing."

ADDED: Also about the interpreter, from the same commenter (Bob Boyd):

He wasn't perfect, but his intentions were the very best.
His signs, though meaningless, were nuanced and brilliantly delivered.
He's obviously super smart, he has a palpable emotional connection with the common people and a true understanding of their struggle.

And:

Certainly this man wasn't what we have come to expect, but perhaps its our expectations that we need to examine.
Rather than yield to the demands of convention, this unknown agent of wonder has jarred us out of our complacency and showed us possibilities that only yesterday did not exist. This is the hallmark of a truly great interpreter. We have only to recognize him for what he is.
Do we really need to see things done the way they have always been done? Can we really not move beyond the comfortable, the familiar?
We could ask ourselves.
"What the fuck?"
Or we could ask a question that may bring true understanding.
Let not our efforts on behalf of the deaf make us blind.