It just means "white left". It's a Chinese word used by even the Chinese Left. It's used to describe SJW values, mainly those of white saviorism. The Chinese hate the Western SJW culture too. Since they will try to side with China, use it to trigger cognitive dissonance.
Also throw "wumao" at the CCP shills. It's the phrase used to describe the CCP's 50 cent army that types anti-American stuff all day. It's a legitimate thing to use, unlike "Russian bot".
well maybe here in america. in europe the journalists usually whine about russian bots because they simply can't accept that the population has more sympathy for russia as they are closer to us culturally than the us. as they are all in transatlantic think-tanks where they receive their marching orders they have a hard time grasping that and instead make up these conspiracy theories.
its the dissonance between you, a normal sane american and your journalist class turned to 11.