Scott McCloud is the worst site updater on the internet. Everything he touches is instantly obsolete. That Chrome Comic Book? The cover is dated 1993. His birth certificate? 1894. Nothing is arranged for posterity.
It's often interesting, though. This link from 2004, in which he lists 20 personal favorite webcomics, is notable for how many talented people have departed.
I was working on another project that year, so I have no insights. But it's no secret that when talented trailblazers leave, the effect on the community is typically negative.