Irony is a slippery thing.
Everyone who’s looked at Conservapedia has noticed how hard it is to tell whether the posts there are really written by dim-bulb right-wing nutjobs, or are ironic parodies of dim-bulb right-wing nutjob writing by bright non-nutjobs. You just can’t tell. It’s a risk you run parodying a stupid person. The usual way of signaling to the reader that you’re being ironic is to include idiotic or monstrous statements (as Swift did with baby-eating), but when the actual targets of your parody are themselves idiotic, the signal gets lost.
For example, take Dennis Madalone’s “America We Stand As One”, though Madalone’s sin here is not stupidity, but bathos. Madalone (musician and former Star Trek stunt coordinator) looks a little like Stephen Colbert in a wig, so you’ll be reminded of Colbert, and think that maybe you’re watching something along those lines. But as the video goes on, and you count the mawkish clichés — walking on the beach, the pounding surf, angels, flags, tearful wife at a grave, dream-firemen projected on clouds — waiting for some kind of parody signal or expression of satiric norm, a wink or a punchline, you’ll will slowly realize that no, he really means it.