Getting gays out of the military has been a pet project for the alt-right crypto authoritarians for some time now. This is a win-win for Trump because it attacks Obama's legacy, appeases his base, trolls progressives, AND is unlikely to be implemented. So it fires up his twitter base and he doesn't have to actaully do anything. Although supposedly ultra conservative homophobes VP Pence and AG Sessions are backing the plan.
Notably, Energy Secretary Rick Perry, who is supported by former Navy SEAL and advocate of unrestricted Rules of Engagement Marcus Lutteral, expressed the christian fundamentalist sentiment in his campaign ads when he was running for President.
Rick Perry, a former Eagle Scout, backed Trump when he gave his aggressively nationalistic and militaristic rambling speech that included a story about his time at a cocktail party discussing real-estate with other moguls, and of course a long winded reiteration of the fact that he won the 2016 election in case you forgot, in front of the Boy Scouts of America.
Trump criticized Obama for not giving a political address to the boy scouts but no doubt Obama had a good reason not to engage in that practice. My wonder is, does Bannon set this stuff up BECAUSE it resembles Hitler, or is Trump just too stupid to know?