“The reason a Teshuva is not written or publicized should be obvious.”
Umm, doesn’t seem obvious to me. Without them publicly explaining their reasoning, it leaves many people (as you can see on this forum) assuming they have no real reasoning.
“There is such thing as darkei shalom.”
You surely realize this doesn’t apply. When the Greeks told us to bow to idols, should we have done so for darkei shalom? Why not just make a huge kiddish Hashem and mass convert to Christianity for darkei shalom? Making the goyim happy by any means necessary is not a real thing outside of the delusional pipe dreams of Coffeeroom posters. The fact that we exist and keep the Torah inherently makes them unhappy, so if we start worrying about what does and doesn’t please the goyim then there can be no Torah or mitzvos.