The XC90 never received an update during it's entire long production run. So what you see in a 2014 model is largely the same as that in a 2003. So yes, the interior and infotainment system you saw in the 2012 XC90 would be "old-school" compared to a 2012 XC60 or XC70. But even the more modern Volvo systems are panned as outdated compared to other vehicles in the market segment.

If fuel economy is paramount, then an XC60 or 70 will offer the same AWD and power with a little better efficiency. If safety and size are more important, then the 90 is tough to beat.

As for eschewing the "modern junk", that's a losing battle and contrary to the goal of safety, IMO.