Yes. It's also slightly gray to post quotes from other prominent Lesswrongians.
When did this rule come about? As recently as six months ago it was considered normal to quote EY as long as it wasn't from LW.
I figured the intent of the rule was "don't turn quotes threads into LW ingroup circlejerks", so the idea's to not do any quotes from e.g. the people in the "Top contributors" sidebar, no matter where they showed up. Do other people have other interpretations for the rule?
Here's the new thread for posting quotes, with the usual rules: