Alright so..
There is nothing wrong with not using skype for disco in general.
I guess it depends on the person, though it is useful for factions to have a skype communication or other type of communication to co-ordinate things internally easily and with speed. Instant messaging does the trick.
If you do not enjoy the type of environment that the skype group provides and it is harming your attitude and feel for the game you enjoy then sure. You can make that decision to leave. It will be harder though for the faction leader to get a hold of you.
But anyway looking back I do miss the times when i was new and didnt know anyone in disco. That made my experience so much better than now. I didnt know who was behind any of the ships and that made it more immersive for me. I didnt know what to expect inRP and ooRP. That was all part of the real fun. I envy new players for that reason.
In some ways new players should stay off factions for this reason but there are also lots of downsides to that as well.
As to the pvpwhoring in player group shype channels.... I have seen many levels of it. Some come naturally with the patriotic cry out of "We are better than outcasts! We are corsairs!" But yeah then you get the ragers that are like "omg there was a 2v2 and then a 3rd came and ruined the fun omgomgomg."