> The chargers contained a grounding pin internally, but it wasn't actually connected to anything. Utter madness
That is standard procedure in consumer electronics actually.
My work MBP is charged via external display and sure enough, I get zapped every now and then. The bundled charger also has just two pins.
Every single time I get up and then sit back down, I have to brace myself for electrical impact. Maybe it's the universe telling me to stop working (or stop taking breaks... hmm).