He may be concerned that a movie labeled "Dolby Atmos" will not play properly on his "Dolby TrueHD" receiver. The movies will playback in "Dolby TrueHD" since Atmos information on disc is an extension of the TrueHD track. Since there is no Atmos processing or Atmos speakers, there will be no Atmos effects. The movies will still play wonderfully in "Dolby TrueHD" until you get to "Avengers:Infinty War". Then, well, let's just say that if you watch that one in "DIRECT" mode as some have, you can count on the bass going directly into the toilet.