Theres a few species classified as endangered ants on the IUCN Red List.
However didn't aliens crush humanity to make space for a Intergalactic Super Highway in Hithchikers Guide to the Galaxy? We aren't even endangered according to those ruling fictional aliens who epitomise the "not interested in humanity" aspect.
As best as I can tell, there are no ant species on any endangered list, so this is a hyperbolic point.
(In general, we don't even study ant species enough to know whether they are endangered)