Earlier quoted context omitted.
Stop bending semantics to fit your binary view point. Instant in this case means you move the brush and it distorts as you move the brush. No parallax, no beach ball waiting for it to do the computation. It happened as you moved it. It was instant. Even with brush sizes the size of the image you were using. It had unlimited undo. It had unlimited layers. That's not an arguable point.
Right, unlimited everything, got it. /me wonders why he even tries to point out the folly to people with no clue about how computers work...
It's not like people will think it's unlimited for real, there's no such thing.
It seems to me you are having problems interpreting words in context.
EDIT: I mean, if he said you could have 8K undos, or 8K layers and the response time is <15ms would that make you feel better? Does it make a difference?