I think hes suggesting dry trim, which I've also found I prefer over the years.. Drys slower, better dry and the sugar leaves form a nice shell around the nugs when drying, to protect and keep moisture in there longer.
I usually will pluck the fan leaves off when harvesting, then just hang like that, once dried Ill go back and cut off the sugar leaves, which I find is easier to do dry than wet once you find a technique and rhythm that works for you (Doesnt seem to be the case at first.. seems like wet is way quick because you can just side shave the buds and the leaves stand up and are easier to cut. )
One benefit is the leaves that are left are more of the sugar leaves and smaller fans that are decent for trim projects like edibles and oils and stuff, so when your sitting down to trim, instead of having like 3 piles, one pile for fan leaves and garbage with no thc, another pile for sugar leaves and good trim, and your pile of trimmed buds.. With the dry trim, that garbage pile is alot smaller, so I find it easier to be able to sit above the trim pile and just go to town and rarely have to move over to clip something into the garbage pile. If that makes sense to anybody....