When is Satire not Satire?

I love Tom Tomorrow.  If you haven't seen his weekly strip, This Modern World, you are missing out.

But here's my problem with Tom and other cartoonists working this beat: is it still satire when all it does is report the situation, without embellishment, without exaggeration?  Aside from the speculative nature of Tom's prediction of what Trump's tweet would say once he sat behind the desk in the Oval Office, if there is anything whose factual nature we can dispute in this cartoon, I can't find it.

So, when is satire not satire?  When the absurdity of the truth renders satire superfluous.