[lucubratory]

Is this Deep Green Resistance? If it is, the anti-trans thing is a combination of things, one of them being that they view hormone replacement therapy as an unnatural "big pharma" thing that can't survive in their idyllic future where the Earth has a population of 100,000, just like insulin for diabetics. The other is just that they had significant factional splits with thin voting margins, and the faction that kept the name was fighting against another faction that had some transgender members, so "Transgender people are industrialised freaks and/or rapists" was a convenient way to try to expel enough voting members of the opposing faction to seize control of the faction. A lot of the time when you see a random extreme political organisation that's nominally left-wing have a strongly anti-transgender stance, it's because at some point in their organisational past transgender people were casualties in some larger factional dispute.