Because they don’t even know it’s on, it’s usless it ruins music and makes it sound like a demo track; lossless is the real quality, music is made for left and right stereo not virtual sound
Most music is
mostly made for "left and right stereo". There have been times in the past when albums were specifically made for quadrophonic systems, for instance. And within basic stereo, there have been numerous variations. Some albums have been recorded specifically for binaural listening (essentially, specifically for headphones - and sounding less optimal if played over traditional speakers). Arguably,
binaural recordings, while still two-channel, are different from
stereo recordings.
There's also a big difference within two-channel recordings over the decades, depending on what they thought they were targeting as listening hardware. Lots of pop music was mixed to sound good on early car radios. Lots of music has been heavily compressed over the years - not talking about bitrate, but rather about screwing with the waveform so that it loses dynamic range, so there's
only loud, with no sense of subtlety, no chance for quieter notes - because there are too many music producers and executives who think that louder must be better (historically, some compression was also done to keep from hitting limits in vinyl record / turntable technology - too quiet and the sound would get lost in the LP's noise floor, while too loud and the needle might literally get knocked out of the groove).
I recall a friend once saying that it was a shame that music wasn't being released in stereo any more. He said this while sitting in his living room, listening to an album recorded in stereo - sitting in a chair that was right next to one of his two speakers. His notion of "stereo" was when instruments were slammed hard into one or the other of the channels, or ping-ponged back and forth between the channels - such techniques were more common in the early days of the availability of two-channel recordings. My friend didn't understand anything of the notion of recreating the original soundspace, he thought of stereo as something more like a special effect.
I think there's also a good deal of "this sounds different than I'm used to and therefore it's bad" going on. I'm not saying that all of Apple Music's "spatial audio" tracks are improvements, but I'm willing to keep an open mind. I'm not in the "music must be two-channel stereo they way god intended" camp.