I would call this a slide show not powerpoint mostly because making it work with the satanic office formats is a path to hell.

Hopefully simpler formats like this will become the norm and the old ones can die.

You are right, but I guess a lot of people recognise PowerPoint as a brand. Maybe I can bill this as better-than-powerpoint!

The term "powerpoint" has been genericized in the common vernacular to mean any electronic slide show, like kleenex for tissues and sellotape/scotch tape for transparent adhesive tape.

It might not have reached legal generic status but just about any working professional will understand what you mean if you refer to "making a powerpoint deck" even if you don't use the actual Microslop product.