Well that's just bad hazards risk analysis and engineering. It goes to show that Samsung didn't account for the possibility of the explosions bit or even worse,

Well that's just bad hazards risk analysis and engineering. It goes to show that Samsung didn't account for the possibility of the explosions bit or even worse, knowingly ignored the risk of the explosions without putting in some sort of safety mechanism to halt the progression of risk. Safety can be easily explained by the Swiss cheese model. In order for a catastrophic safety incident to occur, usually you need a series of events to align one after another like having the holes of several Swiss cheese layers match up before you can go straight through.