I'm suspect about how there are no movement controls. It's all prescripted. There aren't any physics either. Not impressive.

I think this is quite impressive. As for the movement controls and physics, both introduce complexity completely unnecessary for a tech demo.

...you do realize this isn't a game, right?

Nonsense.

There is nothing compelling about WebGL except that it is interactive.

If I wanted a non-interactive scene that repeats, I could do it in anything and upload it as a video on youtube.

Dynamic interactive 3d is the exciting thing about webGL and it is the the thing missing from this demo, so I too, am disappoint.

Since you're so unimpressed. https://developer.mozilla.org/en-US/demos/detail/bananabread