It is a bit jarring, but I think that is the point. The show off this beautiful machine. Surely, only Apple could have designed it. Then at the end - BAM - Microsoft.
I may understand their need to differentiate from Apple with the blue background. But why the sliding laptop that made it look like a cheap BestBuy commercial?
[1] https://youtu.be/XVfOe5mFbAE?t=90