I don't think it's bad at all, you have to remember that clients looking for techs don't think the same way we do. We understand the touchy subject about how people say 'orientals only run NSS bars' etc and people get edgy on this site about it because they don't want to seem racist etc.
But the truth is, this is the way some people think, and before I became a tech, i did too, not to discrimanate or as a racist, but because that's what I ever saw in my area as a nail salon and I never knew there were other professional places so you really can't blame people for saying it, you can only correct and guide them.
I have had many clients come to me saying "oh yes, those chinese nail places blah blah" etc etc. The person who put that post in may be chinese themselves or looking for someone else who can't speak chinese or other related languages so needs someone who speaks the language too.
I have also had women come to me who have told me they specifically requested an asian pakistani and were sent my way becuase they can't speak english, not because they were racist or discriminating, I didn't find that offensive at all.
You don't know who the person posting is, and if they were trying to be discriminating or vindictive etc, I think they would have said alot more than ask a simple question xx