That’s right. M1-powered Macs have been out for a little over six months, and already Apple is making some features exclusive to them.
Must read: I just found my lost AirTag… you’ll never guess where it went A look at Apple’s listing of features for MacOS Monterey preview highlights which features will be M1-Mac only.
Examining the footnotes, the features listed as M1-only are:

FaceTime Portrait ModeLive Text in PhotosInteractive globe in MapsDetailed new city experience in MapsNeural text-to-speech voice in more languages for SiriOn-device keyboard dictation

Want any of these features? You’ll need a new M1 Mac. 
See: 

M1 MacBook Air review: Impressive, but doesn’t beat my Intel MacBook Pro  M1 MacBook Air review: After 3 months use, here’s what I wish I’d knownThe Mac price crash of 2021 

So, even if you just bought a shiny new Intel Mac, here’s your warning from Apple that obsolescence is already on the horizon.