As for the two-prong rest, or any other rest, having PRIMARILY dictated shaft and/or bow setup for years; you could not be more wrong in the sense that you obviously intend your statement to be taken.
It couldn' t be more CORRECT in " the sense that I intended it to be taken! Especially when responding to your quote below. Rests have been dictating fletching configurations for years , hence the biggest adavantage to drop aways.
A rest should not primarily dictate what size, number of vanes/fletch, and type (helical, offset, straight, etc.) your shafts require.