I run a distribution because I don't want to micromanage-with-maximum-difficulty every little detail of my system.
If you're going to continue to force me to use the freeking registry editor to get the behavior I want from my system, then I might as well be rolling my own.
Documenting something "on a wiki" someplace doesn't help me when I'm on an airplane and want to continue to listen to music with my screen closed. The only way I'm going to have a chance of having that kind of detailed knowledge when I need it is if I build the whole system "from scratch".
I agree that this is a reasonable default, even though it's not something that I'd want, but the lack of a readily accessible preference is just obnoxious.