Samsung or Windows could easily develop a feature to quickly disable biometric auth, if that is a usecase they cared about. But this ultimately means you don't

Samsung or Windows could easily develop a feature to quickly disable biometric auth, if that is a usecase they cared about. But this ultimately means you don't trust your biometric auth. Remembering a password is only a problem if you don't trust your biometric auth: otherwise, your biometric data is pretty much your password. If you don't trust it, a solution is simple: do not use it (on either Apple or any other device). Apple approach could be somewhat more secure if done properly, but it only covers limited usecases (eg somebody getting your device before you had a chance to disable biometric auth) with increased complexity.