I don't feel like they ever used forced obsolescence with Mac's. When they dropped support for the latest OS on your machine it was usually because it couldn't run it. I recently updated some older Mac's and even a couple of OS's before support was dropped things got really sluggish. I imagine with the Apple Silicon machines the OS support will stretch longer than it has on the Intel ones. Maybe the higher prices are a hint they expect people to keep the machines in use for longer than before.