A quote from the election page
Community moderators are accorded the highest level of privilege on our community, and should themselves be exemplars of positive behavior and leaders within the community.
(my emphasis)
Like it or not, moderators are community leaders, it's one of the things (most) of you were elected to be. That's why it's important you are seen to be active within the community.
Most of our elected moderators where likely elected because they were active within the community. That life subsequently means they no longer have the time to devote to SF is sad but really at that point they should be honest with themselves and the community and step down.