I'm torn on this one. Parents can't win can they? Drive your child to school you'll be criticised for clogging up the road. Put a 5 year old in a pushchair you'll be criticised for babying them. Get them on a scooter or bike, someone still wants to criticise.
Cyclists also can't win re bells. Ring your bell, you're called aggressive. Don't ring your bell, you're told off for sneaking up on them.
My kids cycled to school from reception onwards, and when they were old enough on the road (supervised). Part of the route is a path which is for bikes/pedestrians. The pedestrians used to drive me mad. I know people don't have eyes in the back of their heads but there are also lots of people who are on their phones or otherwise very unaware of their surroundings. Dithering about all over the path rather than waking in a straight line. Allowing a dog to walk miles away on a stretchy lead, or not on a lead at all, just wandering around. Sometimes I'd be there with 3 kids and me on bikes (going so slowly we'd nearly fall off) and people would look round and see us and still not move or tell their kids to move out of the way. People say bikes are going too fast but maybe as they aren't bike riders they are unaware it's actually very hard to cycle at walking pace, it's the speed that keeps you upright. Also one of the reasons for cycling is it's faster than walking!
I'd say there are inconsiderate cyclists, inconsiderate parents of kids on scooters, inconsiderate dog owners, inconsiderate pedestrians. Maybe everyone just needs to think about other people more in shared spaces.
And if you don't have kids and are able to avoid walking places at school run time you'll be saved a lot of stress.