I don’t think it was based solely on the number of runs left. I imagine it was a ratio of runs left to runs completed for one thing. But also it sounds as though these were players who they investigated thoroughly. As was said in the post;
So I’d say some things said in chat also played a part as it might have supported the idea that they were leaving to be malicious, and not for any legitimate reasons.
Ultimately if you’re still here, whatever you’re doing is fine.