That's a valid point, allowing trapezes and unstayed rigs conflict with each other. Sure you can put a trapeze on the unstayed rig but it would be nasty or require a very big stiff mast.

Along with this is that installing pocket luffs and trapeze connections is a hassle from a rigging point of view. From a rescue point of view I don't want to contemplate pulling the main down on a stayed pocket luff rig with trapeze wires on the water in 25 knots and some chop.

Sure it can be done and performance may be increased slightly, but is it worth it at the cost of some basic safety measures?