https://arstechnica.com/gadgets/2021/10/macos-12-monterey-the-ars-technica-review/

Big Sur was a landmark release of macOS, in ways both technical and symbolic. It introduced a major new redesign, it was the first version of macOS to run on Apple's own in-house processors in addition to Intel's, and it was the first version of macOS in nearly 20 years to change the version number. Coming off that, this year's release was bound to feel a little small.