Interesting. From a quick look at the specs, the fx120i that all current systems rely on has a resolution of 120g x 0.001g. Compare with the 120g x 0.0001g scales that you linked to. I suppose my response would be two things, though I haven't tried them.
1. The 0.001g resolution already is very close to resolving a single kernel of powder. I'm not quite sure if a kernel of common stick powder is slightly more or slightly less, but it is approximately 0.001g. Therefore, a 10fold increase in resolution would only occasionally achieve a 1 kernel improvement in mass consistency in a large population of charges.
2. The prices appear to be 2-3x that of the fx120i.
To appreciate my point, you have to separate the value displayed on the scale from the actual charge weight.
While a scale displays in increments of 0.02 grains, the actual weight will always be something other than that. Usually such a scale will produce loads of no better than +- 0.04 grains on a good day.
Now many of you are in denial at this point and without any basis of fact for your disbelief will reject my claim. Please feel free to ignore the following if you must.
All I can tell you is that I had a Sartorius 2 decimal place scale that is arguably better than the FX120, and after replacing that scale with the Vibra 220, I would never go back.
Now for a bit of context, why would you NOT want a better scale?
If you only shoot inside 500 yards and use large caliber rifles. At only 500 yards, the weight variation will not translate by percent to a meaningful vertical dispersion, and a large powder capacity will be less affected by the weight variance of a 2 decimal place scale.
If you are a competition shooter or just would like to load the most precise ammunition possible, you cannot get there without a good 3 decimal place scale.
As for cost, by the time you buy the 2 decimal place scale and the automation, you will be in farting distance of a good 3 decimal place scale, so cost is neglidgable.
If you want to argue convenience, the difference again is moot, because you can use a powder thrower to get close, then an old school hand operated trickler to refine the load, plus a pair of tweezers.
The takeaway is that if a 3 decimal place scale drifts by 0.004 grains, you are still well within 1/5th of a kernel of Varget.
When your 2 decimal place scale drifts by 0.04 you may not even know it and that is at least 2 kernels, either side of the direction of drift.
Take a look at your own loading records and review how much a charge weight change affects velocity and calculate how that velocity variance translates vertically. An average size kernel of Varget weighs about 0.02 grains, so 5 kernels is about 1/10th of a grain.
You can watch this if you're interested.
https://www.youtube.com/watch?v=w1T1bdJ6E0Q