Its like Hillary walking into a working class kitchen for the first time.
They've been shielded from even critical support of China and other AES for so long they literally, not figuratively, literally cannot process that people exist that have beliefs that aren't Reddit Approved. They immediately assume it's bots or wumao. Human beings can't possibly hold these beliefs, so they must be Oriental hordes or actual robots.
Do they even do Latin masses outside of the Vatican anymore? I mean I'm sure they do some places but how common is it?
Usually there are a couple of churches in a diocese that do it once a week with the express permission of the diocese. There have been instances of diocese forbidding priests from doing it, or from performing the Eucharist during it (with the general ideological split being if the diocese sees these masses as an outlet for wacky conservative Catholic frustration, or as a gathering place for wacky conservative Catholics to create a different, heretical sect), but in general most of the large population centers in the U.S. will have at least one church that does one mass in Latin a week, usually on a weekday. Monasteries also generally follow their own dictata and are often done solely in Latin, with them only holding common mass in vernacular.
Orthodox Churches are even weirder about this, with them only holding mass in the vernacular that the Church came from (so a Serbian Orthodox mass in Los Angeles will be done in Serbian).