It's instinctual for a cat to right itself as it falls and land on its feet (unless you're our cat, then you just flop however you land). There are tons of videos on youtube of cats falling/jumping from telephone poles, tall trees, tall buildings, etc. They have a keen sense of orientation, I think the hairs in their ears help with this - I swear I saw that in a documentary once. Cat's also know if they can fit between things based on their whiskers, if their whiskers don't rub, they're good to go - which is why you're not supposed to cut a cat's whiskers.

Yes, cat's climb high, yes they like heights, yes they jump from those heights. Even if the kitten fell and didn't right itself, I'm sure it would be find as they have softer bones to prevent breaks when they're young. However, I still think putting a kitten on a bike seat next to a ceiling just so you can snap a photo is kind of mean.