That is basically what I gathered from an article with Dan Perry. Flight bows because of their build for specific use are short lived "for flight archery competitiveness". Perry says a well made bow of this design for will out last a self bow before it breaks down. This is all concerning flight archery. But as Chuck has said tweaked a design that sends an arrow far across a field can be made to be a real hunter with great cast, because cast is what is the driving force in building a flight bow.
Taking a side by side comparison the bow I just built was similar to one of Perrys flight bows. But a 1/4" wider at the fades, shorter non working handle, and 2 inch less draw length. There is a trade off for these changes, but the physics of the design still apply. Reduced limb mass and prestored energy does increase cast, while the tweaks builds in some safety measures. Although stressed it is nowhere as stressed as many accepted designs.
Many designs we use today started out as a specific use artillery piece.
Here is one of Dans articles that explains some of this.