Do you know enough about "traditional Chinese clothing" to know that this garb is not associated with morbidity and the occult? If so, maybe just say that instead of repeating "black clothes is not enough to be goth". Not to mention ignoring the "the boots, and the barely concealed look of utter disdain" part of that other comment just makes it look like you are more interested in putting people down than educating them on what goth is so that they won't make the same mistake going forwards.

For what it's worth, I would agree that the top-level post doesn't seem to be nearly macabre enough to fit as goth - but I know basically nothing about hanfu styles and traditions, so it would be hasty for me to write this off as mainstream appropriation. For all I know this is referencing a specific period of Han Chinese history that was very similar to Victorian Britain in terms of the cultural patterns and how it influenced and/or was rejected by later periods. For all I know there are elements of this dress that reference funeral rites, or some folktale about restless spirits that can plausibly map onto an "upperclass vampire count" vibe. If it does, then I'll readily agree that OP certainly did everyone a disservice by not explaining it more fully.