I've never gotten that from Kruk, but I did from Reynolds. He was always able to explain bunting technique, baserunning, fielding, and other things. I don't remember ever seeing anything of value from Kruk.
As for the predictions, its an instant credibility killer. I don't see any reason to listen to the guy after hearing him say those things. The only thing worse was a few years back when Larry Bowa was on the show. Whenever they'd make their NL picks, he'd always go with the Phillies.