They are not ignorant on the subject - ignorance is the active refusal to learn something. The Chinese public is, to my knowledge, largely uninformed on the subject and therefore mostly neutral on trans issues, whereas the Western public gets actively disinformed by TERF nests that are allowed to persist even in heavily supervised Western media outlets like the BBC. While cis people obviosuly do not understand something as unfamiliar as the trans struggle without education, actual anti trans sentiment isn't normal, it has to be actively bred. Reactionaries would make you believe that the West is constantly bombarded with pro-trans propaganda, when in reality the very opposite is true - in a media landscape that has been completely sanitized of dissent on imperialist and capitalist orthodoxy, debating if i should be allowed to exist as a trans woman is one of the last subjects that are used to give people the illusion of freedom of speech. Being a transphobe is not a crime punishable by re-education as it should be, it is instead a permissible position in today's marketplace of ideas, a last retreat where journalists who are not allowed to be publicly racist and homophobic anymore can enjoy a little bit of hate speech, as a treat.