I've be around long enough to never see avatarfagging be a problem and I've been posting Clarence long enough to be accused of it before.
I think that rule is from some bygone era.
Back when message boards ruled the net and you'd get forum posts with long signatures and lame avatar macros.
moot wanted to differentiate his site from all that, so avatarfagging became a rules violation
just spitballing here, but I am nervous now
so here's some SU to change things up and since you love it so much