I'm on the fence with this one. I do think 250 hrs is a bit low to be flying 121. But, the majority of the hostility toward these guys is due to jealousy. I admit, I'm a little jealous when a guy gets hired with such low total time, but I don't blame him for seizing the opportunity. Everyone would. When I had 250hrs ( 3 years go) you could barely get a CFI job. The average instructor had 1000+. This was just before the regionals went crazy. I have a fair amount more than 250 hrs and have no idea how to configure bleeds for an APU. But, that's because I haven't been taught. Once taught that procedure, I'm sure a 1500 hr pilot won't perform it any better or worse than a 250 hr pilot. On the other hand, I do feel these low time guys don't have enough experience with weather, and IFR procedures into busy airports, etc. to be flying around 50 pax. It's really not fair to the Captains. But hey, if they can make it through training I'm sure they get up to speed rather quickly with the rest.