As a Dane who’s lived in the U.K. for 25 years this is absolutely just about people getting used to it, the way Americans have to get used to roundabouts.

Floating bus stops require that cyclists respect the zebra crossing (they often don’t, and there’s often no material on the cycling lane that indicates you should, like bump tiles etc) and it requires that bus passengers expect them. It’s habit and enforcement and culture and it starts early. We just need to get used to something else and let’s not be like Americans and reject a perfectly formed solution like roundabouts just because it requires changing habits.

Danish traffic safety books for children deal with this head on: When you step out of a bus, don’t run off; cyclists may be coming on the other side.