[userbinator]

Also from that article is a good advice in general:

Bugs like that will exist in GUI libraries; it's inevitable. The libraries are big, and do many different things. So one way to protect against that problem is to keep the number of libraries used by the xscreensaver daemon to an absolute minimum.

If you want to make less buggy software, you should aim to reduce complexity as much as possible, and not just hide that complexity with a library. The coordination of multiple processes as exampled therein is a good demonstration of how splitting functionality into multiple pieces may mean adding complexity overall because of the need to coordinate how the pieces interact.