Mathias' stance on Vix has greatly fluctuated through time. From positive at first, to then going radically up and down, mostly depending on who was being more vocal and in charge. Up when it was the likes of Daedalus and Octavian, way down when it was the likes of Zolan and Archibald. Eros made it swing both ways. It was overall a mostly declining trend.
Somewhat similar with Perdan and the Xavax. Pretty much always negative with Perleone since the rebellion, only getting worse with time.
Also, for the sake of clarify, Highmarch didn't give an ultimatum of fighting Perdan or being fought. It said it'd fight Perdan, and those who stood in the way. Standy by and fighting the North without helping Perdan was also an option. I never expected Vix to take that path, personally, but it was an important nuance to many who had more faith in Vix than Mathias did.
