Screw incrementalism. Why do I have a feeling the GOP establishment is using this as a shiny metal object to get the base worked up over an almost non-existent problem (is there a tranny bathroom crime wave I don’t know about?) so they can be distracted and not think of border security and the trade deals?
I do not think these things come from the GOP establishment. They are more the result of an unholy alliance between the left's kook fringe, and the media power blocks.
The leftwing kooks are always about, and the Media Liberals utilize them when they present an opportunity to do so.
I think their goal is to use their influence to help Hillary, and they know this is what is called a "wedge" issue.
If Trump goes along with his supporters, it gives them more ammunition to throw at him. If he goes along with Liberal doctrine, they know it will alienate some of the coalition he is attempting to build.
The media will work constantly to try and bring up these wedge issues so as to damage his ability to win the election.