I’m more familiar with ordinary li-poly cells which burn rapidly but do not explode, although it may appear that way to someone surprised when one lights off. Most consumer li-ions are quite resistant to rapid oxidation events.
86, that is a good thing. As you are likely aware, there are many different materials and configurations. Large increases in power density typically means much more reactive and prone to catastrophic failure. Some experimental configurations and materials have proven extremely reactive. There have been more than a few “safety” problems and failures reported.