Linux is always the biggest pain in the arse, due to the joyous work of glibc
That's a non sequitur. Why does glibc's high quality mean it's a big pain in the ass? Or were you being sarcastic, in which case you ought to be backing up your criticism?
and of course Redhat's need to do everything their own way
I think you're unfairly blaming Red Hat's poor release policy on glibc.