Well, if you read some more of jwz's blog posts about the horrible security bugs that others have added while creating derivatives of Xscreensaver you might think twice before doing so. https://www.jwz.org/blog/2021/01/i-told-you-so-2021-edition For me a screensaver is no longer about trying to prevent dead pixels (or something like that) but being able to safely lock the screen when being away from it for a while.