Looks like this is not a one off clinic specially put together, rather a clinic on the stage Rush are playing that night. Indeed far from ideal for any clinic. You would want something more intimate.
But is is really interesting. He likes to talk yes, then again, he has a lot to say on the subject. I have never been a fan of his writing but when he does something he is actually capable of (drumming) and explains how he does certain things (not techniques, there are others better equipped to explain that), like how he approaches a composition and why he plays a part a certain way, I am all ears. He is one of those drummers that can tell a "story" with his playing and I like that.