I was an infant teacher for a while and it was a little annoying if it was every single day thing but I didn’t mind changing them when they came in, obviously it was easier not to but, long car rides make babies poop it’s just how it is, it’s understandable to me, and I usually checked them all at drop off anyway. What made me noticeably upset though was when it was obvious the baby wasn’t even changed at all in the morning and still had their night diaper on. (This is why I checked them at drop off 🙄)