I'm not defending a single anti-trans policy and neither are any other Democrats that I know. Just because it's not making the top of the prioritization list for some people, doesn't mean they don't care or aren't advocating on your behalf. They may just care about other issues more.
And you can't say that trans issues are MORE important than gun control, eliminating healthcare, deporting without due process, although they may be to you. In every case, people are dying. People may choose to prioritize other issues first, but that's not the same as abandoning trans people.
Supporting a transphobe is saying you can't have both.