It's a general comment about dark operations when dark doesn't help as much as it would at first appear.
I agree with the rest and don't understand** the constant foot dragging by the FAA about ADS-B.
**Disclaimer: I do understand it because the FAA is under control of the Congress and the lobbyists for the aviation industry seem to have made it clear that a mandate for ADS-B will be resisted by a bunch of people who don't want to spend money on what they feel is unnecessary. Instead they go after the ones with a weak lobby, the hobby drones, to have useless short-range position transmitters that don't improve safety, but do increase cost. I also think there is some sort of cover-up in that ADS-B doesn't have enough bandwidth for the full integration such as placing transmitters on known fixed obstacles, like radio towers, and the predicted commercial drone traffic. So the FAA is stuck. Have it as a nice extra, but if they push too much and the flaws become obvious. To fix that likely requires some give from the FCC of spectrum, but the FCC has been selling prime spectrum to private industry and have lobbyists chewing on the FCC who would not give up a slice for the common good.