the block list reason: transphobia
what actually happened, typically: a debate on the nature of transsexualism and whether it's natural or possibly a mental disorder
my position?
before you can even begin to discuss that, you must understand how psychologists define mental disorders to begin with.
this is not a trivial thing, and it has shifted over time. and one aspect of "mental disorder" is actually socially dependent. what might make someone seem insane in one culture might be perfectly fine in another, and thus, treatment may be needed in one but not the other.
mental disorders are as much social issues as they are conditions, and a therapist's job help a person function in the society and culture that they find themselves in.
now, as it happens, the consensus among many therapists these days is that it isn't a disorder, since it isn't something that harms the person nor the people around them, even if it may be upsetting to some.
but what is "harm" and what is "upsetting"...
...do you see how complex this issue really is? but no one even gets that far in thinking and discussing it, because everybody's far too emotional for that.