Hi Brett,
Yes, it has long been established that traditional quick links are a non starter for the actual control system. But for non critical static trim functions like your rudder or trim tab adjusters they do quite well. Like with anything else in our setups, items need to be inspected on a regular basis. Lines, Line wraps, Handle hardware, engine bolts, wheel keepers, etc.
BTW, Material engineering wise anywhere a Steel component fails a Titainium component will also fail. Othere than being lighter, corosion resistant, and non magnetic, titainium does not have strength advantages over steel. The failure most likely was caused by a defect in the part, or damage caused by over tightening the attachment leading to a stress fracture. So if you have weight issues, or need the "Ooooh Titainium, cool factor", it does not merit the additional expense of going titainium.