Gotta disagree Bout it only being the guys breh. China is basically the size of America and for the most part has twice the the entire population of America just in Men. She is in her mid Thirties (per the mini doc and a little research), a lawyer so has the ability to travel (you heard about her rural ass town and even saw it a bit).
People being swayed based off the few lames the documentary showed us, because, it's trying to convey their point. Again, them dudes they showed were total garbage but you hear about Chinese millionaires and billionaires all the time, not all them nikkas sorry. Just like with here, people pursue their careers and stack money, then want to start a family later, but it ain't always that easy when you get older.
Lived in Japan for a few years and travelled around Asia and all them countries have that 27 + stigma. It ain't new. She knew it, still did her thing and now she suffering for not tying the knot early? Maybe she tried but couldn't find who she wanted. Dunno but I find it crazy to believe she and others should be absolved of any blame

My two cents