From the Anti-Authoritarian Playbook;

β€œThe targeting of trans people - and specifically trans youth and trans women in sports - is not a policy agenda. It is a strategic operation. Understanding it as policy produces the wrong response. Understanding it as strategy produces the right one.

Jason Stanley, in How Fascism Works, identifies the targeting of vulnerable minorities as a core mechanism of authoritarian consolidation. The function is not primarily to harm the targeted group, though that harm is real and intentional. The primary function is to test the solidarity of potential opposition coalitions, to find and exploit the fracture lines, and to establish a precedent: that some members of the coalition can be sacrificed when the political cost of defending them is judged too high.

Every successful authoritarian project has done this. The question it is always asking of the opposition is: is there anyone in your coalition you will abandon to protect the rest? Because if the answer is yes, we know exactly how to proceed. We find that person. We make defending them as costly as possible. And we watch the rest of the coalition either hold together or fracture. If they fracture, we learn where the next fracture line is, and we push there.

The targeting of trans people is not the end of this strategy. It is the test. And what the test is measuring, in real time, is whether LGBTQ organizations, progressive coalitions, and pro-democracy movements will sacrifice their most vulnerable members when the pressure is sufficient.

@Elodie_lyra this is an eye opening summary. I already knew parts of it but this fills the blanks for me. I now understand better why it's always perfectly harmless groups, which do no harm to none, who get singled out and target of hate campaigns.
Why is the GOP escalating attacks on trans rights? Experts say the goal is to make sure evangelicals vote

The recent blitz of anti-trans bills may not align with what many Republicans believe, but party lawmakers pursue them on behalf of their most important interest group.

PBS News