Nothing Woz says in the interview is false, but he's being very careful in what he says.

He buys uncut sheets from the treasury, pays a printer to make them into pads and so on, and then sells them to random people at a loss just for the fun of playing with their minds :-)

"By law it's legal tender" - true because they're genuine "I get a printer [...] to make these pads" - they make them from genuine bills "I'm not sure if it's the right President" - white lie, it is "The serial numbers look suspicious" - yeah because they're sequential