While reading the OP, I thought of something. Creationists are often harping on about how X brand of plant has Y brand of animal which fertilises it and only it, such as hummingbirds and vanilla or something like this.
There are two options: either each of these was taken on board the ark, or they developed from some other species after the flood. Creationists must reject the latter, since otherwise they would have no argument about this sort of irreducible complexity. (And, of course, since these relationships are irreducibly complex, it would destroy the entire argument of IC.)
But the only alternative is for all of these species to be on board the ark - which leaves the idea that one of each "kind" boarded the ark in tatters, since the kind can either now represent individual species, or it has no taxonomic meaning whatsoever. If kind = species, then you can't fit every kind aboard the ark. Even otherwise there is this risk, since you're adding a lot of species than you would otherwise be able to leave off. But if kind is just an inconsistent meaningless jumble (as we always knew) then creationists cannot use the word to make arguments about macroevolution, or even about the number of animals on the ark.
However, it would make more sense for kind to have a nearly consistent meaning, being that of roughly species, since people tend to distinguish between organisms roughly at a species level, and the implication of the passage is that it is roughly the same level - it doesn't say, "Noah took on board the minimum number of organisms while ensuring that biological diversity would be preserved where it couldn't be re-established by evolution."
Of course, the entire argument is premised on the assumption that creationists are sensible and consistent, which we know is rarely true.