are you saying google is betraying them unless they sell new chromebooks with 10y chromeOS contracts going forward until the heat death of the universe?
The only issue is for those who purchased Chromebooks in the past two years. They purchased based on a promise of ten years support. Now Google is retroactively clawing back two years of that support. If today Google had announced 2036 as end of support instead of 2034, there'd be no problem.
Then when my organization inevitably fucks up the migration we can pay money to bail ourselves out rather than being out of compliance.