The thing with threads, and I have said it before, is that they are an internal clamp. The more accurately executed they are, the more consistent & even pressure they apply.
I am a huge advocate of threads being used in cue construction. Ferrules, collars, internal construction threads are all part of what makes a solid playing instrument in my cue construction theory of ideas and thoughts. You just cannot get any better type peace of mind when pulling two or more pieces together when constructing "short splice" butts or applying collars to a fullsplice. I feel the threads create a mechanical bond that has a much greater chance of being there forever over any slip fit construction. But I also believe the glue used only keeps this mechanical bond from loosening and has very little to do with actual holding power. Wood swells and wood shrinks. Even the most properly seasoned wood is going to have a degree of movement in it depending on the environment it is assembled in and the many other environments it will go through in it's lifetime. . This is the purpose of using threads. You are not relying on the glue to hold the two parts together. Once the pressure is created it should always be present whether glue is applied to the connection or not. The glue when used properly also fills the voids needed in most type of threaded construction used which is a small but necessary item.....all of the above is strictly voiced IMO only.