A really long thread & to be honest I haven't read it all. IMHO motorcycling (like life in general) is about managing risk/return.
Wearing hi vis reduces my risk of not being seen. Increases my risk of cager target fixation. Net positive. Cheap. Check---do it
Same thing with good tires, good corner lines, trail braking, eating olive oil instead of lard. Cheap, effective, net reduction in risk