if you only respect trans people’s genders when they’re good people, that means you don’t really respect trans people’s genders. that’s conditional, and it’s false.
by all means hold racist, misogynist, ableist, abusive, etc trans people responsible for their bigotry but don’t bring their gender into it (unless their gender is part of it, such as a non-native person calling themself two-spirit)
in doing that you reveal that you believe cisness is fundamentally valid whereas transness needs to be earned