Why aren't we using quick-release joints like these in pool cues?

[eastcoast_chris]

I actually bought a 5 pack of those about 5 years back to make and extension for my cue. Worked well. Cost about $15 for 5 of them.

Seems they have gone up a bit... https://www.ebay.ca/itm/17213566497...d=link&campid=5335988529&toolid=20001&mkevt=1