it's just an okama, has nothing to do with western brain damage culture. Although "they" have been trying to claim them, pissing off the japanese in the process.
Those are bad comparisons and not at all comparable to mc's situation.
"i was summoned to another world and the kingdom that summoned me tried to kill me so I destroyed them"
Could have made him spill the beans under the threat of death, he had the upper hand and could have annihilated all of them if he wanted. What's the point in working peacefully with that scumbag?