If I may, I will respond in reference to telescoping stabilizers in general, over turnbuckles.
I just built stabilizers for two different customers who had broken their turnbuckles. That isn't uncommon, and neither is stretched threads. With turnbuckles, only one side holds the load- the side that is being pulled against. The other side does nothing, due to the loose mounting system, and the nature of a turnbuckle. Telescoping stabilizers, on the other hand, hold both under tension (pulling), and compression. So, both sides keep the load stationary, making the system stronger and less prone to damage. A quick hitch has no effect on that- it depends on the stabilizers to hold it stationary. So, while a quick hitch could make telescoping stabilizers unnecessary because a person isn't having to adjust them when changing implements, the weaker design still has a bearing on how the system holds up. Telescoping stabilizers, in conjunction with a quick hitch, is a simple to use system, that is also stronger.