I really liked the photos above. Facscinating. Thanks.
The wooden decks farmer refers to were on the Essex and earlier class U.S. carriers. (I don't know of any others with wooden decks.) This was done because of their naturally high freeboard, and to keep the center of mass (gravity) below the volumetric (bouyancy) center to preserve roll stability.
The Royal Navy took a different approach with Arc Royal and other early carriers, outfitting them with steel flight decks. However this cost them in aircraft numbers and storage capacity for fuel and weapons.
The wooden flight deck carriers of the U.S. and Japanese navies were indeed vulnerable to dive bombing and aerial attack. The aviation gasoline used by the aircraft then didn't help either. Damage control measures were better developed and emphasized in the U.S. Navy than the Japanese, though they got better as the war progressed. I think their loss of three large aircraft carriers to USN dive bombers in ten minutes during the June 1942 Battle of Midway ( they were caught with thrir flight decks full of fuelled armed aircraft getting ready to launch) changed their attitudes.
Modern carriers have deep draft, high freeboards, high strength steel flight decks, lots of ballast & storage for high flash point aviation fuel and weapons and capacious hangar decks - along with compact, very flexible and responsive, high capacity nuclear powerplants.