Reddit user XiXMak discovered a limitation in iOS 16 that limits the maximum number of lock screens. It turns out that there can be only 200 of them. If you exceed the limit, the system will offer to delete one of the existing screens. Note that such a limitation was not described in the presentation.
At the same time, such a number of screens makes the system work slower, it will not work to scroll through them. You will have to go through each screen and, if necessary, delete it.
Note that iOS 16 introduced a customizable iPhone lock screen with widget support and other features. Although widgets cannot be freely moved around the screen, as well as change some of them. And in the beta version of OS 16.1, which is still available to developers and enthusiasts, there is a new way to quickly select between wallpaper sets.
It is expected that version 16.1 will be released soon, where new features will appear.