As a general rule, I actually agree with you on this, although in terms of product development, I'd say having access to a pressing facility where you can build what you want is more important than where the skis are actually produced. Quality control can also be an outsourcing issue but in terms of building a 'special' ski, it's more about how easily you can prototype than where you produce.
In this particular case, they don't have their own press but 1000 'outsourced' to a small factory in the town where Magnus lives, and is also at the foot of the Swedish resort which has (arguably) best variety of easily accessed terrain in the country so they can walk into the factory any day, walk out with a pair of prototypes and drop back in that evening with feedback and things to change. It's also a factory with a great reputation for quality. That said, they certainly do have limiting factors, budget definitely being one of them as a small brand (thus only offering 4 sizes of skis in total) and they are a new brand full stop, with the inevitable obstacles that throws up. But I don't think they suffer from a prototyping lag or development issues of that nature.
I don't have a pair of Vishnus anymore but I do have a 171 1000 Park. I can drop a photo of that next to a 176 Icelantic Nomad if that's useful?
**This post was edited on Feb 17th 2022 at 8:35:35am