DT returns to zero fine. Why are left handed threads a good thing? In my experience they just make it easier to loosen the adapter when you're tightening the can.
I've haven't had that happen a single time with multiple cans running Xeno and getting moved around. What I did have happen repeatedly with Plan-A, a RH thread taper, was the adapter stay with the muzzle device when removing the can because the taper provided more resistance than the 1.375x24 hub threads no matter how much I tried to torque it on by hand. I tried using various thread lockers and nearly had one adapter become permanent after the thread locker cooked on and I couldn't get it off.
After I put my Xeno on a can, I put the right sized socket on the hex portion, give it a few zips with the 1/4" impact and it's on there till I want it to come off then it's just as easy to remove. If folks want to run DT, that's usually fine especially if the can is dedicated to one rifle, but for taper systems, LH threads and hex flats (spanner slots suck) are where it's at for me.