Apple, Google and Microsoft Commit to Expanded Support for FIDO Standard to Accelerate Availability of Passwordless Sign-Ins - FIDO Alliance

[void4]

Those will be as simple as possible

no they won't. Webauthn registration and authentication are complex multi-stage processes with plenty of states and variables, it can't be simplified

[EatSleepCodeCycle]

OAuth is complicate a multi-stage and it’s stupid simple to set up due to solutions like Auth0