@Honeybadgers, if you looked carefully over the earlier posts, you'd see that @AmandaW purchased her pen from a local (Australian) vendor - who refused to address the problem because (they claimed) TWSBI insisted on looking after this themselves. THIS WAS NOT A GREY MARKET PURCHASE. TWSBI for their part offered to send a replacement nib, but with no assurance that it would fix the problem. I agree, this seems (to me) like a bad faith action on the part of the vendor (which TWSBI did little to ameliorate).
As far as TWSBI's customer service goes, I've always found them helpful - the deal with Aussies the same way they do anyone elsewhere in the world, sending replacement parts from their offices in Taiwan. But I can understand Amanda being frustrated that the seller refused to take the product back - frankly, under Australian law, I don't think they have the right to "duck-shove" the problem to the manufacturer rather than issue a refund for a faulty product (though this *may* be a reflection of TWSBI's policy, I don't know).
I don't think there's much to be gained by pounding the OP for expressing their opinion. They had a bad experience with the purchase of this pen, and it's fair enough that they should be frustrated at the lack of resolution. It's easy for you and me to say that we could just fix the problem for ourselves (most of the cheap pens I buy from China need a bit of tweaking, and I've gotten used to having to do it!), but the 'regular' fountain pen user should, I think, be entitled to expect that pen writes well out of the box. Either that, or that the vendor (if they're local, as in this case) will co-operate in a refund or exchange.