"Active" is relative, as for sure many do only auto-vote.

I completely agree with that clarification.

In fact some users might have gone for good or even deceased but still counted as "active".

Yeah, that's true. As a hobby and out of curiosity, I’ve been looking into that a bit lately.

Would love to see who from the big accounts do manual votes and who only auto.

Me too. I bet a serious study on that would hold many surprises for us.