If smartphones count as creation machines because they can take pictures and perform some basic editing, then my DSLR or Polaroid camera also counts. Even my pre-smartphone candybar from 2008 would count.

Unfortunately, smartphones, due to their form factor, don't actually allow precise editing or manipulation of content - which is what is usually meant by the idea that "smartphones are devices for consumption, and not creation".

The same applies to text, to some extent. Yes, you can author a novel on a smartphone, but it's gonna be an excruciating process if you want to do any fine text manipulation at all.