Chrome lined barrels are in no way MUCH less accurate. They are slighlty less accurate. The same shooter, with the same loads, and two exact rifles, one with chrome lining, the other without, will shoot very nearly the same group. Non-chrome lined may be .25 moa tighter. Most shooters will never even know the difference.
Chrome lined chamber DOES increase reliability potential. Chrome lined barres last WAY longer than ones that dont. You are, of course, entitled to your opinion, but these are not opinions, they are facts.
Chrome lining does not have to be special ordered from companies who make mil-spec type rifles. For instance, Armalite, Bushmaster or Colt. Chrome lining is pretty much standard on all of these rifles. (Colt's have chrome lined chambers but not bores on their HBAR's, and chrome lined chamber and bores on all military profile barrels). The only reason Rock River even started offering them is because there is such a high demand for chrome lining.
Super accurate tack drivers should avoid chrome. Absolutley. Anyone else, ESPECIALLY a gun that may be used to protect life, go chrome or go home!