While I certainly cannot, nor should not, dispute a single thing you posted, it is amazing after all that GOVERNMENT paperwork, they would allow a battery design, with cells known to overheat in many other applications, on an aircraft.
The only semi-safe design for these batteries are to have every cell contain a thermal trip device such that on cell cannot generate enough heat to cascade other cells into a ignition source with NO internal off switch. Once they start to overheat they take on a life of their own.
True, the cobalts start to generate their own oxygen in a big way.
We got new sonobouys aboard the P-3 for a time that had lithium batteries. They were so dangerous that the Navy instituted special, new procedures for jettisoning the things if they caught fire.