I don't know where this believe, that bass in mono was something to strive for, comes from. Or that professional setups would work with bass in mono.
Movement in the bass is fun and is sounding great!
This is the image over frequency, only between the surround channels, of a recent movie:
Is that enough full spectrum dominance and stereo bass in the surrounds?
Even for stereo mixes, where mono-compatibility always has been important, since the late 1990s, effects, like for example the Waves S1 shuffling, have been used for all kinds of (intentionally exaggerated) bassy stereo fx, flybys or reverberated bigroom kicks that spread out, mostly on intros/interludes in EDM. On headphones these effects are creating a nice unusual pressure difference between the ears, especially if it goes lower. Stereo-Upmixers with surround speakers that are not monoized, can reproduce an increased sensation of width and depth in these situations (because these effects work with anti-phase, they are steering the surround channels strongly).