I'm excited for the day that I can easily install SteamOS (the modern one that runs on the Steamdeck) on an M2 Mac mini for an insanely powered "Steam console" for my living room TV.
He's been clear that he's not Asahi Lina... and he's also not a GPU hacker as far as I know.
He even did a super-cringe "take over" video, where Asahi Lina "broke into" one of streams: https://www.youtube.com/watch?v=effHrj0qmwk
I have no specific knowledge, but it seems very clear to me that at the very least marcan is a collaborator in the persona of Asahi Lina; and absent further contrary evidence, them being the same makes sense.
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¹ And if stream key exfiltration actually happened, I find it hard to imagine anything but acrimony arising.
> If you want to support my work, you can donate to marcan’s Asahi Linux support fund on GitHub Sponsors or Patreon, which helps me out too!