Yes, it is. Fundamental to a clear understanding of forgiveness is the requirement that the recipient is genuinely penitent and intends not to sin again. Any other sort of "forgiveness" is just a reward for bad behavior.
I had hoped that the "All is Forgiven" title was satirical. The artist has made clear it is not. It should have been omitted from the design, which otherwise would have been quite powerful.
Nothing is forgiven. We can't forgive those who are not sorry for what they've done.
He depicted a weeping Mohammed. That would seem to set the condition you state.