As someone quite accustomed to gaming diversity with all kinds of mixes of religions, sexual preferences, ableness, nearly every ethnic backgrounds imaginable, "isms" were rarely a large issue. They did happen occasionally, people are people but it was always manageable and tolerance was the expected norm. Maybe its a California thing all of us saw ourselves as gamers and "freaks" and just got along. If this has genuinely changed its pretty sad.
Now if folks in Asia want more gaming translations it will require that enough be sold to make it worthwhile or that bilingual locals get a license where needed. It costs too much to translate something that isn't going to a big seller.
As to Asian styled classes . Before worrying about it ask some Asians if it offensive first. I doubt they'll care any more than Westerners care about classes called Knight or Cleric with cool powers. Even the issue over the term Oriental may be a big kerfuffle over nothing, academic nonsense bleeding into general society rather like the term Latinx where only 3% of Latinos prefer it and 3/4 have no idea what the heck you are talking about .
Pew Research
Oriental Adventures is not that a good supplement being pocked with rule of cool 80's rules stuff and mediocre setting . Still for its era, it was very progressive and well researched with actual Asian subject mater experts. Its dated to be sure but the past is a foreign country and its best understood on those grounds.
As for more general behavior its really easy
If you game for the public, be an ambassador
If you game in public, be nice
If you game in private , do whatever you and your group like.