Why the Swordfish biplane was not obsolete thinking

Would ramps have improved wartime carriers, and was the Swordfish already obsolete because it was a biplane?

No; wartime aircraft gained little from ramps, and the Swordfish's biplane layout deliberately met demanding lift, range, reliability, and payload requirements.

A ramp would add little for wartime aircraft. The Swordfish needed neither one nor much catapult assistance because it generated lift so readily. For its specification date, a biplane was a rational way to obtain a reliable long-range night torpedo bomber that was easy to handle and could carry a heavy weapon. Monoplanes became the dominant answer later in the 1930s, after the Swordfish requirement had been set.