i think my definition of "joke" , in this case, would be more along the lines of "handled flippantly or un-heroically" (that last one REALLY should be a word! - stupid spell-check...), "teasing" or "not to be taken seriously", or "a laughingstock".But all my opinion and I see why you and others don't like the appearances. I'm not saying they're great and will get a new series for us, I just don't see them as a laughing stock.
Of course, it is all semantics, which is nothing to quibble over; in the end, we all colour how we view things through our own emotional filters. You say "Potato", I Say "Hippopotamus" (for my Australian friends, that is like a very large and quiet and docile Tasmanian Devil, I think?). It's all good.