That is true... and is also missing the point of the comment you were replying to, which is the speaker
discussed in the article is the Ray, which does not do Atmos. That comment, in turn, was replying to someone who was trying to warn people off of buying the Ray, because, among other things, "the atmos effect is almost non existent" - which... yes, the Atmos effect is entirely non-existent on the Ray, because it's not an Atmos-capable speaker.
For the record, I have an Arc, a pair of Play:1's, and a Sub, and the sound is really quite lovely. In conjunction with an LG C1, it makes movies at home a very enjoyable experience. The Atmos height effects are decent if you do the placement right, and are on par for a system that's bouncing sound off the ceiling rather than using dedicated ceiling speakers. I've dabbled in high-end audio over the years, and I'd generally agree with everything
@beanbaguk said (and, oddly enough, I also have an older B&W surround system - though mine are series 600 - with an NAD receiver). I love the Arc setup, because it Just Works, I get great surround sound from the Apple TV and PS5, including Atmos on the Apple TV if the source supports it (like Disney+ and the TV+ app) with nothing needing tweaking. And, as a bonus, "Hey Sonos, play jazz" (
or whatever) works really well.
(I upgraded from a Beam to an Arc - when people ask "should I upgrade to an Arc to get Atmos?" I always answer, no, upgrade to an Arc to get a wider soundstage and a more involving experience, the Atmos is a nice touch, on top of that.)