I certainly agree that details matter. And for nearly 50 years (off and on) I've struggled with what constitutes the "right" amount of reverb from live gigs to occasional studio settings. But if we have a finished mix and are satisfied with it and ready to master I still don't understand how adding reverb during mastering and then turning it down below the JND* can add any value. Now during the mix process I can grasp how reverb on a track might be turned down to an imperceptible level per that track and yet influence the sound of the mix (as it interacts with other tracks).

*"just noticeable difference" as we used say back in the research days