I daresay that's because complainers are usually the most vocal group in every arena,
Very true; the only way to use this info is to know the product yourself well, and see if those opinions have any merits. If a penbbs is apparently dry to some people, I don't have a problem with that, as long as it doesn't mean starting or skipping issues. If a good percentage says a pen leaks (not the case with what I've read with penbbs), that would raise a red flag. There may be many more users who write in Chinese about this particular brand, which unfortunately I don't speak, that would give the whole thing more statistical validity.
I think some Chinese firms are still discovering the market system, taking into account the central government still calls the shots, and a small number will eventually learn the merits of competing on what customers appreciate, including reliability and consistency, while others remain stuck on competing on prices and controlling costs. I've made Brand Equity analysis for work, what strikes me is not how much Chinese firms have yet to go, but how poor some not pen specific "western" brands are actually doing in spite of their old style marketing and PR hubris.
I think I'll eventually try a completely clear 308, I was looking today at SF21 "vermouth", but I wouldn't be able to decide without more real world shots of this particular colour.