Some members did stay in the game and moved to other alliances, but it seems like a good amount of members I know either deleted or went into perma VM. Unfortunately it does seem like a decent amount of members really did quit, because BK is the only real alliance that they know. Most of them rarely interact outside of their alliance, if at all, so they will take what their leadership says at face value. They only see the OWF and the rest of the community as toxic and actively hostile towards them, an image that is propped up by people like Leo. When all that you’ve been fed is that false image for two or three years, you won’t be so willing to let it go.
I was part of BK at two different points, one back in early 2017 during the Trail of Tiers. Leo was still low gov FA at the time, and I remember posting on the OWF and joining different alliance channels before. Eventually Curu and Leo told me to avoid interacting with the outside community because it was a hostile and toxic circlejerk dominated by EMC. I won’t be surprised if that image continues to this very day.