The score isn’t arbitrary. You are being passed over because you lack experience and I’ve never heard anyone say they don’t invite certain classes to their groups. That’s something I only ever hear people say on the forums without any evidence that that was why they were declined. Getting rid of raider io won’t get you invited to anything. People would just pug fewer hard keys because without an easy way to vet people it would be a waste of time.
Stop pretending that you are a victim.