"To this day that was the most bullshit caesar salad I have every experienced..." - triggerfinger
The benefit is indirect. The direct costs of a wider search are larger, but are compensated by the possibility of a direct hit. Once the exact word has been found, the sentence may be completed quickly. The long agony of rewriting, to cast a modern near miss in its most favourable light, is avoided.
Guess which lost word I am trying to revive :-)