You may dispute his opinion, and that's fine. But Ruby's lineage descends directly from Smalltalk, so regardless of preference, I think it's unfair to suggest that all Rubyists are totally ignorant of Smalltalk.
Robert Martin, to my knowledge, was never a Smalltalker, and received an enormous amount of flack in the Smalltalk community for making a lot negative, uninformed statements about Smalltalk at that conference. Uncle Bob started, by his own admission, as a Cobol programmer and later transitioned into C++ and Java, where he did the bulk of his work in OO consulting and authoring. He only started to branch out into more "exotic" languages a few years ago.
My bad. When I first watched that video, I thought I specifically remembered Martin talking about the community in an inclusive way. So he's a bad example.
Regardless, I still stand by the original point: I wouldn't make such sweeping generalizations about the ignorance of an entire community of people.
You may dispute his opinion, and that's fine. But Ruby's lineage descends directly from Smalltalk, so regardless of preference, I think it's unfair to suggest that all Rubyists are totally ignorant of Smalltalk.