>

The stadia controllers connected directly to the stadia servers. They didn't need to be wired to work. But with the stadia servers gone, bluetooth means they'll be at least useful as an ordinary controller for typical use cases.
Seems like a good move. Users will be more likely to continue using the controller for PC rather than just tossing it in the trash. >

The question is why was that not enabled from the start? Clearly the controllers have bluethooth capability and most likely it was intentionally not enabled to lock it into their ecosystem. Just add it on the massive list of reasons why Stadia is a failure I guess.