While there are many great new features in macOS Monterey, several of them are not available on Intel-based Macs, according to Apple.
On the macOS Monterey features page, fine print indicates that the following features require a Mac with the M1 chip, including any MacBook Air, 13-inch MacBook Pro, Mac mini, and iMac model released since November 2020:
Apple has not explained why any of these features are not available on Intel-based Macs. For what it's worth, Google Earth has long offered an interactive 3D globe of the Earth on Intel-based Macs both on the web and in an app.
Apple is currently in the midst of a two-year transition from Intel processors to its custom Apple silicon chips in Macs, with the changeover slated to be completed by WWDC 2022. Macs with the M1 chip have proven to be much faster than their equivalent Intel-based predecessors, with even the base model MacBook Air with the M1 chip outperforming a maxed-out Intel-based 16-inch MacBook Pro in benchmarks.