The CCP and other countries are cracking down on rainbow activism because rainbow activism is, in some sense, American imperialism and the enforcement and promotion of American interests and culture on their soil. And the difference between "off-target" boners and the political ideology is hard, so they rather overreach than underreach. History shows you can be really godawful to gay people and not have the society suffer much from it in terms of stability and the like. Those societies are unnecessarily nasty to people, but they did live.