The reeks of someone new being in charge (at whatever level approves this list), and feeling compelled to "prove" themselves via a show of power - in this case, adding items to a prohibited list. As such behaviors go, this one is petty.
Adafruit's point on the banning of specific devices stands out as being particularly foolish. I doubt security would react well to any obvious cyberpunk cyberdeck build, regardless of the hardware inside.