No it does not contradict anything. Old accumulators from old battery pack are unreliable trash. You have no way how to check their state, except few indirect m

No it does not contradict anything. Old accumulators from old battery pack are unreliable trash. You have no way how to check their state, except few indirect measurements, because they are sealed and only thing which might have any information about their history state is BMS, which might or might not be the one which accumulators were originally used with. Like mass recycling perishable food with random best before date.