I don't quite understand your point. Is Drip non-pink to include trans men? That sounds really far fetched to me. And your friend found it ugly because it's not pink? Design is obviously subjectivity and perhaps your friend prefers the color pink, but has any of this actually anything to do with trans people and inclusiveness?

What's your reasoning for the conclusion of the app looking the way it does due to this and not due to the developer just subjectively preferring this design?