Hmm, thanks for the analysis, bethel95
At least they tried to do something to improve the design...
However, it only takes a split second of one of the pins being disconnected, before the hardware will use up all the power stored in the mainboard and crash. If the battery reconnects quickly enough, the OS will crash but the phone will remain powered on, if it's marginally longer, it'll result in a full shutdown.
Thing is, unlike a desktop computer, the phone doesn't have those big fat inductor coils ("doughnuts" wrapped in coils of copper wire), so it is less able to handle a momentary "brownout".
It's almost like the electronic components manufacturer that had a millisecond power outage cause their equipment to screw up a large batch of microchips... it may have been a laser that was responsible for the damage, but i no longer remember the name of the company... i think it happened last year or the year before..
I understand the idea behind the newer battery design, but still don't trust it to be perfect enough in real life, with keyboard slams, accidental drop-kicks and thermal expansion. If it fails, it still fails, a well known 1st gen problem in a 4th generation device...