I don't now much about accordions and the industry at all, but from reading the forum I get the feeling that some of the current accordion manufacturers know they are on borrowed time. A lot of them are working with the bare minimum workforce who are well aware of the situation, and that extra few hours it might take on quality control to ensure a top notch accordion goes out in A1 condition costs precious time and money. I honestly don't think some of them could care less whether they'll get repeat orders. It seems to be a case of live for today before the shutters finally come down for good.
There are no doubt several makers with proud family traditions who are still determined to deliver quality instruments, although unfortunately that quality comes at a price that not many of us can afford. Hohner, perhaps the "Ford" of the accordion world, seems to be the only maker of acoustic instruments who have consistently offered them in such numbers as to maintain a viable existence. They seem to be dominating the European market at the moment, even in France, where they are probably the most popular choice of young beginners. The quality probably isn't the same as in previous years, but it seems that Hohner is doing something right, even if they have no qualms about sub-contracting much of their work to keep costs down.
If it is the case that the accordion subject of the OP is a Hohner, then maybe they aren't actually doing everything right at all.
FWIW, I once had a car that had a persistent misfire. I wasted 6 months trying to get it fixed under warranty, but I'm not going to tell you what make it was, because they're a pretty decent manufacturer!