Also, M1/M2 are perfectly fine and capable hardware. It's hard to justify the upgrade outside some artificial constraints Apple would bring in with a macOS update.
I haven’t asked because my current laptop is more than ok.
I think they plan for 3 years but in reality it becomes closer to 4 (because they don't plan the refresh during the actual hardware refresh cycle, so you'll end up with a computer that was released in September the year before in like August the year after).
I've never worked anywhere that replaced my computer after 2 years.
I run bloated slow electron apps and chrome all day, generally with profligate usage patterns, and things hardly ever slow down even with corporate antimalware. Sometimes I forget about having left Windows VMs running in the background.
Anyway, why would my company spend $2500+ every two years to turn instant into instant?