It's a case of "follow the leader". Whenever a candidate wins in a democratic or semi-democratic system, all other candidates become more likely to lean more towards the winning candidate's positions on issues, either in the hope of peeling off votes or preventing defections from their own moderates.
If only there was some way we could have went the other direction on the issue. Maybe a candidate who wasn't a openly raging transphobe.
Criticizing Comrade Trump is now forbidden