While I mostly agree with you, there is one caveat to that position. Increased warfare precision also affects the rules of engagement directly - strikes that may have been considered impermissible due to high collateral damage may become feasible as the expected damage goes down to more palatable levels. It's probably impossible to quantify that effect with any meaningful accuracy and I'm strongly inclined to think precision warfare is still a net win, but it's not quite an unmitigated benefit with no side effects.