I've only got 5 minutes in, and already, there is a lot wrong by that "expert". Please be aware that they are discussing bicycle tires and those are different than tires that are designed for 4 wheeled vehicles.
But one thing he did get right that needs to be emphasized - what is written on the sidewall has nothing to do with what you ought to run.
I'll give a more complete report later - when I have a bit more time .
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