Do you think TSA/CBP is going to check the flash data lines to see if the MCU is scanning the flash internally?
This isn't a standard USB flash controller... You would need to break the casing and physically probe it to figure out that something was off as far as I can tell. It's not like the MCU broadcasts that it is scanning to the USB port.
You would have to be hitting the stick pretty hard, not just a normal file scan to notice the timing being slightly too long in a small portion of the scans. The bigger problem would be that the flash drive would be brand-recognizable if it ends up being mass produced that they might auto-confiscate it, and of course the default file that it searches for being known.
Most laptops and computer monitors are LCD (by an extremely large margin)
Dark mode draws MORE power that way because people turn their screen brightnesses up to see anything. Meanwhile I can use light mode on my computer during the day with screen brightness on 5% and see just fine. Less eye strain too with a soft cream background or even beige and black text.
Plus then my eyes don't get burned up when browsing to an app or website that doesn't have built in dark mode support.