The lock screen feature is not the worst user experience, but it is entirely unnecessary.
To get past the lock screen and move on to the Windows 10 login screen, a user has to click, or swipe, or press Enter. Typically, the lock screen displays a pleasant image, or perhaps the company logo, and then patiently waits for user input. One of the first aesthetic features a user sees when logging on to a computer running the Microsoft Windows 10 operating system is the lock screen.