A sop to social conservatives. Why not get the views of military leaders? According to the article:
I am
quite sure that this decision is in accordance with the views of --
at a minimum -- the SecDef and Trump's Chief of Staff. Their views on these kind of issues were hardly a secret either within the Marine Corps or outside it. But neither Mattis nor Kelly technically count as "the military" since they both presently occupy civilian positions, so the article may be
technically accurate. That doesn't change the reality of their extensive experience in, and knowledge, of the military and its needs. Also, pretty sure that
at least the CJCS, General Dunford, feels the exact the same way. They're not going to say that stuff publicly because they don't want to be dragged in front of Congress, so they give advice to the President in private.
The costs, ongoing requirements for medical treatment and maintenance, the various exceptions and policies that are the subject of seminars, training, workshops, bulletins, etc.., are all a pain in the ass with zero corresponding military benefit. There are more than enough things taking the time, attention, and focus of our military away from their core mission without adding another unnecessary one. Obama's policy was all minus, and no plus.
The press will paint this as just Trump jamming this down the throats of the military, when the truth is that the policy is not popular within the military at all. They simply don't speak out on it publicly because of command pressure not to do so. But here's a poll from Military Times:
https://www.militarytimes.com/news/pentagon-congress/2017/07/27/poll-active-duty-troops-worry-about-militarys-transgender-policies/