If so, do you throw out each of those shots until you get it right?
Bingo!
I remember watching a vid of Gwilym Davies pull shots and I noticed he was purging the grinder with ~3-5g of coffee between shots.
I thought to myself how much sense it made, how great of a practice it was, why it's so very much an "espresso" thing to do and that I'll probably never do it in day to day practice.
So it is with stepless.... it's a fantastic idea but is anybody sinking shots until they dial in the perfect stepless grind? Even if you did it on Monday at 9am are you going to auto-sink your first shot later that evening or the next day? Because we don't have laser targeted "locked and loaded" grinding and things are always on the move.
Better is better but the idea of falling between the steps and not being able to compensate by grind/dose doesn't really sound like the type of measure anybody who cares would fail on more than a few times a year. At least not to a degree that matters in the grand sense. And I don't want to sound like I'm advocating sloppy practice or anything but maybe it's like a dog whistle. At some point the measures are small enough that like a dog whistle you really don't hear it anyway....it's still real, you just don't hear it.