United Kingdom

I don't think this analogy is as effective as you think. Portraying trans people as "sacrificial lambs" both reasserts the notion that they are powerless and that their oppression is somehow a distraction from the imperialist project and not integral to it.

Transphobia is a necessary element of white supremacy and colonialism because the very existence of trans people proves that naturalised gender and sexuality (and the accompanying oppression of women as men's property and baby makers) is arbitrary and not compatible with our material reality. It's systemic.

Because it is systemic, we know that this oppression is also something that has to be constantly maintained in increasingly resource consuming and convoluted ways to enable transphobia in a liberal system that seeks legitimacy through moralized human "rights." That means that resistance is not only possible, but inevitably effective unless appropriated by those moralized values (which was largely how liberals tried to disarm queerness in the twenty-first century leading up to this more overt wave of trans genocide).

Trans people are not helpless, and they aren't "sacrificial" any more than women, racialized people, indigenous people, disabled people, and any other queer people are. All of this oppression is inextricably linked, the narrative that they target one group to distract from oppression of the others is only effective with people who don't intuitively understand that.