[signal11]

You don't always have to smile or emote to project engagement. If you look at him introducing the Surface Laptop 2 at about 1m30s[1] through to 2m -- the passion and energy is unmistakable. Listen in particular to his voice and how he's moving around, and his palms.

Compared to that, and especially to a casual observer, he looked disengaged at the Win11 launch event. But it's probably a consequence of having to perform in front of a camera and not be able to move around as much.

[1] https://youtu.be/UtmTlcr1NkU?t=90