Is it still needed? I ask that because divorces are now much easier to get and there's no fault required. I would imagine that you could get a divorce within the two year period quite easily.
But the marriage contract has changed. Why should two years of waiting and a standard divorce be necessary? Why not let the unwilling spouse exit the marriage by annulment as soon as possible?
Also, some transitioners actually want the marriage to continue as a same sex marriage, as it validates their transition, so they deliberately make divorce difficult.
No one should be forced into a facsimile of a sexual orientation they don’t actually have.