They stuck to their word, technically. 3 years, with monthly patches for security, on a device that sold abysmally. There are rumors they sold (most of) the first run of SD2 in the first 4 months, and didn’t bother to produce any more. I know they’ve been out of the consumer SD2 since July/August of 2022- as of January this year, not even my Fortune 50 Corpo clients can get MSFT to pony up a SD2 replacement under warranty or otherwise. They just write a cheque to your account if you request as much.
Microsoft’s mobile team Icarus flew too close to the poorly advertised sun, in this case. Expensive ass phone to build, expensive ass phone to buy, but damn it’s a great device.