Riding the board is an important part of diving. Working with the board to get as high as possible is obviously important if you want to jump high and spin fast. Although it seems pretty cool and a bit "beastly," dipping the board on 1-meter is not something that helps, in fact, it kind of works against the attempt to ride the board.
Sometimes though it becomes inevitable because of the size and strength of the diver, and the only way to avoid it is to move the fulcrum up substantially so that the board will not bend as much. I guess though, it becomes a good problem to have!