I'm a little skeptical / pessimistic about the long-term effectiveness of judicial action.
Roe v. Wade was decided in 1973. However, there was little legislative backup, and abortion rights have been under attack ever since, and those attacks have been gaining ground to the point that abortion is effectively outlawed in much of the USA -- at least for the people who aren't rich enough to bypass all the obstacles. (People with money were always able to get them on demand, laws or no laws.)
We have to see judicial action as merely the first step towards achieving trans rights. The long-term goal has to be normalizing the existence and humanity of trans people to the point that most cis people see restrictions on people based on whether they're trans as being just as bizarre as placing restrictions on people based on whether they're redheads.