That's not how I read the argument he's making at all. I would urge a little caution before completely discarding some of the most powerful voices we have on the left, even if they're not left enough for your taste. I think calling a man garbage who has been spending his entire career railing against capitalism and teaching Marxism is very unwise from a strategic perspective. I think that's doing a service to the bourgeoisie and we can find more constructive ways to critique points we don't agree with.