Trans people don’t suffer for being trans—they suffer from how the world treats them.
I mean, that's not true for a lot of us ... even if you imagine a world that has no anti-trans bias and where gender-affirming care is provided early, and all trans people know they are trans early enough to avoid going through the wrong puberty, there are still cases where trans people will suffer because they are trans, e.g. gender affirming surgeries like vaginoplasty will involve suffering, etc.
Unlike being gay, being trans can't be fully depathologized (or ... at least fully removed from a medical context - whether we see it as "pathology" or not), many (most?) of us rely on gender-affirming medical care. Personally I'm not sure this means we have to hold onto the stigma associated with a pathology, and I understand nuance is difficult for messaging, but, still ...