I wish they would let this go. I submit that there is no longer anything unconventional about this. After all it's been 16 years since Bill Clinton played the sax on "Arsenio" for crying out loud!
Every presedential cycle since then, candidates have been popping up on late night and daytime TV and the mainstream media (ugh, I can't believe I just used that phrase) keeps going on about how new and unusual this crazy trend is.
It is neither new nor unusual. Get over it.