G-pa and G-ma wont change a poopy diaper


So I just want to start off by saying I am 36 weeks pregnant so my due date is coming up. Anyone under 18 isnt allowed in the hospital when baby us born so my son (2 yo) will be having to stay with his grandparents. My dad and stepmom are telling me they won't be able to change my sons diaper if he poops. They said they would have my aunt (dads sister ) come over to help ..is this normal ?? Am I the only one shocked by this?

Update: my aunt is going to be coming over my house to babysit my son while I'm in the hospital and my dad and stepmom will be coming over to help her with everything else other than diapers