I recently learned that they’re C8 plug connectors (IEC 60320). As far as I can tell, the 8 in the name is coincidental, though.
Just to say, Apple Mac laptops are also known to do this, and Apple don’t mind either.
Cheaper laptops have plastic bodies so don’t do this 
Link to a more full description of “touch current” standards. Seems if the current is low enough it’s in standard. https://www.asutpp.com/touch-current.html
This wording is confusing to me (possibly also to others). The neutral wire should always be at zero volts (relative to ground), but the hot wire doesn’t spend most of its time at a higher voltage; measured relative to the neutral wire, the hot wire swings between a large positive voltage and a large negative voltage.
For “120 V” systems, the voltage on the hot wire alternates between +170 V and -170 V. For a significant amount of time it is between 40 V and 170 V, and for a significant amout of time it is between -40 V and -170 V.
That’s a fair nitpick–I would just say that I meant high voltage in the general sense, not the strict numeric sense. A circuit that produced -10,000 V would be called a high voltage circuit, not a low voltage circuit. The hazard is related to the maximum difference between voltages, not the numeric values.