Because I don't like to write much text when it's not needed. For auto-loading, in the past I experienced some problems, this is why I'm writing this in the install instructions but if you say that now it's working fine it's ok.
About safe mode cvar, I know it's a bit useless and unexperienced owners may screw up memory, I don't know what was in my mind when I've added this.
UPDATE:
V 0.2:
+ Added support for sounds
+ Removed the cvar.
Threaded Mode