It's not just Gtk. At $WORK, we have a lot of user space daemons where everything boils down to GLib, and GIO for all IPC. We do our own hardware and kernel de

It's not just Gtk. At $WORK, we have a lot of user space daemons where everything boils down to GLib, and GIO for all IPC. We do our own hardware and kernel development (upstream kernel + .ko's for our stuff) and that's good code. Then we have the daemons in userland providing interfaces to ioctl's and cdevs, with some house keeping and interfaces for DBus and HTTP APIs. All the userland stuff just vomits GLib-CRITICAL messages. No one bothers to check for them because everything is running as daemons with stderr redirected to /dev/null... And $WORK is one of the better places I've worked at. I am certain that if those assertions would have been fatal, they would have been fixed a long time ago.