If a charger had the option to set the re-charge threshold, then "4.10V" would be just an example setting. For my 10440's i'd choose a setting nearer to the typical termination voltage of Nitecore i4 with these cells. This would simulate a trickle charge for poor-conditioned li-ion cells. One purpose of it is the convenient determination of the max 10440 capacity.
It is easy to determine the max capacity of good 18650 cells with zero self-discharge, and it is a challenge to determine the max capacity of poor 10440 cells with high self-discharge.
Well, that's just one RL application. For advanced users only, or peeps with ocd ;)
I had *tried* to measure the capacities of my four 10440 cells. Was a big practical challenge to get accurate reproducible data!