XHS is a platform dominated by young urban liberal women and isn’t going to be particularly representative of Chinese society as a whole.
Like I don’t think it’s showing lies or anything, queer people can and do live safely and openly in China’s cities, but the app might not show realities of rural conservatism, or the fact that homophobia is still very common within family units if not in broader society. Just something to be aware of.
Chengdu has a (positive) reputation of being China’s most queer-friendly city, I guess she was drawing attention to that?