UX is not the problem with Passkeys. Passkeys were designed to align with the interests of BigTech, who are bent on stopping the abomination that is general computing devices in the hands of consumers and forcing them into their walled gardens. The language that is used for taking away freedoms is the same as always, safety. Where we ended up with Passkeys is an operating model that is suitable for corporate devices, i.e. the user can only do what the owners of the device allow them to. Suboptimal UX is downstream from that problem.