I believe what this is really about, mainly, is something about these particular strings.
I've done more than enough to try to make these strings work, including working in good faith with Dunlop and their rep with multiple emails, text messages and phone calls. At this point, I've gone many packs of strings, including multiple sets I purchased, and even more replacements sets sent by Dunlop, in two different gauge sets.
Besides intonation problems, I've found these strings to be inconsistent, difficult and cranky to set up and to simply use day to day, in tune. The problems have now happened with these flats on multiple basses, three total now, including an almost new Nash PB, and Jazz bass that's been reliable for years and another P bass I just finished put together myself. In this regard, they are like no other type or brand of bass strings I've ever dealt with going back decades, compared to Dunlop's nickel rounds and Fender 9050L flats I've also used just with the last couple of weeks. The problems with these Dunlop stainless flats are exactly the reason why I've had to switch strings so much in recent weeks and the situation has decidedly crossed the line; no fun.
I'm now convinced, almost certainly, there is something fundamentally wrong somewhere in the engineering and or production process of this product line. From all that I've read here on TB, this is not the first time Dunlop has had similar problems with their string products.
It is what it is.