Here is my take on strollers and hits...
You have those that walk and stop dead and you bang into them. They have no consideration for anyone behind them. You have those that push strollers who use them as a weapon to bang you out of there way. They have no consideration for other guests. There you have it, it works both ways. We have no way of saying who is at fault unless it was us involved.
My kids are much older now & it has been many many years since I used a stroller. Yes, I banged into those who walked out in front of me (not watching where they were going) and I would apologize. I know it wasn't my fault but I have manners. I have also been slammed into where I have been bruised and it was done on purpose.
Heck I have been rammed by a wheelchair when watching the taping of the Christmas show near Cindy's castle. I had to call a CM over to remove the woman in the wheelchair. She came from behind and rammed her way to the front until she rammed me.. then I called for help. Those around me backed me up too. She was removed from the area... and boy was she t'ed off... oh well.. don't ram others and you will be fine
Point I am making is it can happen by accident, or on purpose, by stroller or wheelchair.. even by a body banging into you when not watching where they are going... it happens, it is a crowded place.. and there are some without manners and some with...