For me Atmos is not about height channels it is about better quality. On Tidal the Atmos tracks sound way better to me than high quality FLAC. I am using a 7.1 setup.

861v6, Oppo83 (3xSpdif Mod), Wiim Ultra running Squeezelite, Tivo Edge, Apple TV v4 with Key Digtial Audio Extractor, Von Schweikert fronts and center, Triad in ceiling sides and rears, Aerial SW12, Orchard Audio Starkrimson 3 channel and Sunfire Cinema Grand amps