Would not "doomed" in a Scottish accent sound more than a tad like "domed"? I was on a lengthy birthday video conference with half of Edinburgh yesterday and failed to hear the phrase come up, sadly.
I don't know if he's a Tau spy, but yes, it surely looks like a Tau drone. Also like a techier version of a S. Asian sun hat. Maybe it, like the tray has a built in refrigeration unit? That would surely help in a hot climate. Either way, it provides a heck of a lid for his dome. Or a subtle harbringer of doom. Or both, almost indistinguishably.
I hope you're surviving the sudden foul weather I'm hearing about. (Maybe it's not a bad time to be inside after all.)