It literally does. If its indistinguishable than its, by definition, not satire, its just the thing. Just making something awful that no-one can tell isn't supposed to be sincere isn't insightful
I understand the point you're making as it is one of my main frustrations with a lot of art these days; they perpetuate the very thing they claim to criticize. but I think that's a pretty low bar and one the cover clearly passes. Christians cannot literally walk on water. No one believes that because it is a verifiable fact. It is, therefore, pretty clearly a commentary. This isn't a subtle cartoon.