Ask yourselves, would you really feel comfortable with your wife and family in the back of an MD-88 with a Captain who has zero experience in the airframe?
Every single passenger today, all over the world, at all the carriers flying in the back of a B787 or a A350 are flying with a captain that has zero hours on that type....!
I came to the ANA group as a DEC on the 76 without haven flown it before, now I'm an instructor teaching guys that have never flown the airplane before...., it's done all the time in all type of A/C's
You do realize that many airlines hire non-rated DEC's right?