One might say, for instance, precisely the same sort of thing about being Jewish. You can change "posture" by banning the wearing of yamelkas, banning the speaking of Yiddish or Hebrew, prohibiting the giving of time off on Friday evening or Saturday and closing down or destroying synagogues, but none of that necessarily means you are "destroying" the Jewish beliefs or identity inside. Of course the intent is to make the outward practice or posture of being Jewish so onerous that the people will stop feeling it on the inside, or else not transmit its belief, identity, and practices to the next generation, but whether or not that is really the hope within the mind of the genocidaire is rather immaterial. The genocidaire wants "Jewish" to cease to exist as a category, and will use the means at their disposal to make that so.
The stated objective is the same here. The state of Florida is seeking to suppress the "posture" of being trans by restricting access to drugs, by prohibiting teens from presenting or being acknowledged as trans at school, and by restricting the diffusion of knowledge about being trans or the trans identity. If we take the Republicans at their word, the stated logic is that if you prevent people from "posturing" as trans, their transness will pass away and they will resume being cis. But whether this is truly what they believe or not is immaterial: whether the belief is that doing so will make us ontologically cis or will simply compel us to no longer openly express our being trans, the objective in both cases is to make "trans" cease to exist as a category, and to use what means are at their disposal to effect that outcome.