The problem with that is that to measure per-strand current you need to isolate at least one strand and have a current measurement shunt in it, and then either

The problem with that is that to measure per-strand current you need to isolate at least one strand and have a current measurement shunt in it, and then either that strand will carry less current (due to the extra shunt resistance), or you do it for all strands and then all of them have worse characteristics due to the shunts. And any tolerance between shunt values would result in an unbalanced per-strand current… So, yes, it's doable, but there's a thermal/efficiency/reliability cost. Generally you'd just design enough margin into it so that a failing strand doesn't matter. I'm suspecting they just didn't add enough margin, maybe it's only designed to support one of the six strands failing (I would really expect at least a tolerance of 2 failed.) Or it's really a poor design regarding the mechanical latching; can't work if all pins have poor connection…