Cis people are not entitled to teachers. Trans people shouldn’t be forced into a teacher role for all trolls on the off chance they’re merely clueless. Many trans people have shared their lived experience, including in this thread, it isn’t hard to find.

Here’s the ideal solution: person spreads their ignorance. Their ignorance is dutifully removed. Person goes on to learn why their ignorance was ignorant and maybe thinks before speaking next time.