No — they are complaining that the keyboard is parallel to the table - most people prefer the back to be slightly raised. Apple's desktop keyboard is wedge shaped for example.
Back in the day, Apple used to sell laptops with little feet you could flip out to raise the back up. That wasn't necessary with a wedge shaped laptop but they've gone away from that.
The wedge shape is more ergonomic than you might think. My current thinkpad has a wedge shape and I love it. When Lenovo went away from the rounded corners on the palm rests my wrists started hurting right away. On a smaller laptop it matters less, but on thicker ones it’s a pretty big difference.
Also the wedge makes it feel so much smaller. The M2 could be half as thick as the M1 but feel so much bigger because of the wedge.
Shouldn’t the keyboard be tilted back to be ergo not up? That doesn’t make sense to me, tilted up (like the wedge shape) puts even more strain on my wrists. Flat is better