I think what he was saying is that Skywest is flying around empty planes with Captain/Captain pairs. There's a captain in the left seat and a check airman in the right seat. They're basically doing captain IOE on empty flights before passenger service starts. The idea is that once passenger service starts there will never be a situation where a captain and an FO who are both fresh off IOE will have to fly passengers. At least one person in the cockpit will have 75+ hours of experience even on the first day of service.

Part of the reason they're doing it is probably also to work out any kinks in the plane maintenance since these planes are fresh off of the assembly line. They probably want to attempt to fly one 8-10 flights per day a few times to make sure that they're not going to all break down the first day of service.

Obviously it's not completely required but I'm not sure why people are arguing that it's a bad idea. They're trying to make sure things run as smoothly as possible when passenger service starts.