There are lesbians and bi women who are not penis-repulsed.
And there are some who are penis-repulsed, with or *without* trauma.
“I would never date a trans woman,” is transphobic because it is a blanket statement on all trans women, implying they are men.
“I have penis-repulsion, which limits my sexual compatability with some women,” is a better, less transphobic thing to say cuz it also can potentially refer to incompatability w/ cis women who prefer using synthetic phalluses, while validating womanhood regardless of genitals.