I haven't been able to keep up with the trans demands Supreme Court (SCOTUS) cases, but there were a few that will directly affect women's rights if ruled in favor of the transgender side. One has been ruled on, and GC feminists are divided on whether the result was good for women.

IIRC there are two cases still in front of the Supreme Court, and the rulings will have a significant impact on whether women can be considered a distinct legal category. That will affect our reproductive rights, because if the legal definition of "woman", includes women plus everyone who thinks they're a woman, it will mean women's share of the healthcare funding pie has to be shared with TIMs; it means that abortion has to share the spotlight with other new women's health issues like prostate cancer and it means that it will be very hard to write laws tailored to women's specific needs.

The trans demands lobby is also attacking women's rights on the legislative side with the full backing of the Democratic party. If the Democratic-backed Equality Act, which every single Democrat in Congress supports, and Joe Biden calls his Number One legislative priority, is signed into law, women as a distinct legal category will cease to exist, and the many of the laws written to protect women's rights on the basis of sex will be cast into limbo. Gays too.

So it's not about the Democrats putting TRAs on the Supreme Court - they're already there. Kagan, Sotomayor and Ruth Bader Ginsburg, and some of the other justices, sympathize with trans demand activism too.

tl;dr women can't fight for our rights, including our reproductive rights, if we can't define ourselves as a distinct legal category.

The Democrats are trying their best to destroy women as a distinct legal category and Democratic-appointed judges already on the Supreme Court are TRA sympathizers.

As well, the Democrats are attacking women's rights legislatively.

tl;dr tl;dr Women are screwed no matter who wins.