It's not black and white though, is it?
You have to let the bus driver have some leeway - there is a wealth of difference between :
1 . An elderly, frail, wheelchair user being unable to board the last bus for a couple of hours, because a stroppy mother won't move a child/buggy because it's a bit inconvenient
and
2. An otherwise perfectly fit, young, healthy, wheelchair user who would just have to wait ten minutes for the next bus, because a heavily pregnant, tired, mother physically can't cope with the ghastliness of folding/unfolding a buggy for the tenth time that afternoon.
It's a nonsense that it got to the Supreme Court - but common sense seems in short supply in 21st Century Britain.