This is exactly the issue for me. Devices used by 10-18 yo students do not last 10 years, and so it doesn't matter if they get software support for that long.

My 12 y/o has gone through 3 Chromebooks since the pandemic, but they are $50 refurbished so who cares

Edit I have a gaming rig, and he uses the GeForce cloud gaming service on his Chromebook, and he loads into Fortnite faster than I do when we play duos