Since when Lucas do we not use APC's in conventional wars vs near-peer threats? What do you think the M3 Halftrack, M113, and BTR are? The Stryker is not a "asymmetrical" weapons system. It is a battle taxi.
The only reason anyone has ever referred to the Strkyer in the fashion you seem to think it was "meant for" is due to the fact that a unit equipped with lighter vehicles is easy to move and deploy quickly. For various reasons, it is SOMETIMES beneficial to deploy a light unit when other units cannot be there. The vehicle is meant for major wars. It just so happens that APC's are really good a people moving, which incidentally is what you end up doing alot of when you are fighting and insurgency in Afghanistan or Iraq.
No one has ever suggested that the Stryker is some kind of tank replacement. What was suggested is that Strkyer BCT's are sometimes ideal to deploy when you cannot get anything else there fast enough, and getting something there is beneficial. GUESS WHAT: we would do the same thing with M113 Battalions or any other mech units form any other era.
TL:DR
The Stryker is just a APC. Just like anything else. It is not a new type of vehicle. It is not a small war specific machine. It is literally just a 113 replacement.