1. Who the fuck asked you?
2. Being trans is not a mental illness. 
3. This article is a perfect example of why we say things like cis are trash. 
4. Gender is a social construct. Humans decided that penis=boy and vagina=girl. Male/female has no meaning biologically because the cultural implications far outweigh them. Anyone who refuses to respect trans people is just being difficult. 
5. It’s so easy to respect trans people. You already respect cis people, why not just make it easy and be a decent fucking human being?