If you use the techniques described in this thread the risk with a dado blade are very low. I've done stopped cuts with a dado blade for over 40 yrs since high school shop class. Maybe it's the anti-kickback blade I use but I've never had any hint of a kickback.
Worst kickback I've seen was a worker building our house cutting a piece of hardwood flooring freehand. The wood got on top of the blade and fired back like a missile through a 3/4" sheet of MDF.