How are your relationships? Specifically intimate ones? Long lasting and trouble free? IMO that's a pretty good indicator along with your professional career.
You're more normal than you think, everyone is a racist asshole when you're on the internet. Add in complete lack of moderation like FFXU and the assholeness increases.
https://www.youtube.com/watch?v=iraGmA7-9FA is one of the best vids i've seen on BPD