Rachel Levine is an admiral in the U.S. Public Health Service Commissioned Corps, and is male-to-female transgender; Twitter apparently takes the view that referring to Levine as a man—whether or not within satire or ideological criticism—violates its rules "against hateful conduct," which ban "promot[ing] violence against, threaten[ing], or harass[ing] other people on the basis of," among other things, gender identity. (Twitter's policy states that "This includes targeted misgendering or deadnaming of transgender individuals.")
The ban is apparently for 12 hours but only if the tweet is deleted; the Babylon Bee's CEO is refusing to delete the tweet:
We're not deleting anything. Truth is not hate speech. If the cost of telling the truth is the loss of our Twitter account, then so be it.
— Seth Dillon (@SethDillon) March 20, 2022
