Do you really think the OP wants to burn tubes watching TV? C’mon.
Obviously you make a very good point. Who wants to waste tubes performing HT duties?
To be fair, I believe that @glennewdick was focusing on extracting maximum sound quality from the Klipsch with regard to 2 channel use. It seems that the vast majority of Klipsch Heritage speaker owners would eagerly agree with his recommendations. David’s question is a relevant one for certain.
Charles