US only I presume?
The article speaks of permissions to orbit satellites but this surely applies only to American companies/agencies within its national jurisdiction?
I wonder how much other tiny junk is up there right now, launched by other nations? And what it's doing? Fiendish Orientals, for example, could pack much mischief into a one-litre box, if they chose.
I also wonder how much science has gone into assessing upper limits on satellite density? With forthcoming constellations of Internet-of-Shyte due, this seems ... Interesting.
PS Why not unspool a small piece of foil, to act as attached chaff, so that even a tinysat can be tracked?