Earlier quoted context omitted.
I think it's serving as shorthand for "in a country halfway around the world, with a government that isn't going to intervene on your behalf as a foreigner even if you figure out who did it and hand them the evidence on a silver platter".
Right, it wasn't necessarily hateful on purpose, but as another poster pointed out, what does it mean that we default to using one specific group of people for that example? If they'd said "PRC hacker" it'd be a different story, but the word "Chinese" conflates a nationality and heritage. It does this, by the way, in written Chinese as well, hence a lot of arguments I've had in the past with PRC-citizen exchange stud…
Personally, given that the Chinese will likely dominate the world over the course of the next century, I'd be less worried about insults for ethical/antiracism reasons (they're going to be the ascendant ethnicity and culture soon, don't worry- they'll be fine!) and more worried about insulting them or the PRC for reasons of self-preservation.