But when I got the hardware I tried signing up and realized that apparently I had signed up for the Stadia free trial 6 months earlier. I vaguely remember trying for literally a few minutes on my laptop. This means that the $100 of promotional hardware they sent me is completely useless for its intended purpose.
It's genuinely sad that some manager or team went to all the trouble of getting the budget for this hardware promotion, but couldn't or didn't reset the free trial for the Google accounts of the recipients. But it might be a clear sign of the general level of competence with which the entire Stadia project was executed.
On the bright side, the Chromecast is still quite useful, although I'm not personally using it and haven't found someone to give mine to. Last I checked there wasn't any way to use the Stadia controller for anything, but I wouldn't be surprised if people could figure out how to "jailbreak" it and make it useful.