“You learn or you die” is “heteronormative” [good word by the way!]? Darwin was a white male, I will concede.
While there isn’t a single verse which directly applies to these current Navy issues, it appears the overall poem applies, in spades.
The Gods of the Copybook Headings
By Rudyard Kipling
http://www.kiplingsociety.co.uk/poems_copybook.htm