[bigheadfred]

I have pondered both of your replies and can’t decide which one weighs more heavily on my mind.

[null and void]

The danger of this failure mode has been ameliorated. Even if the batteries do manage to catastrophically fail, there is no danger to the passengers.

Still for me, I'm following the "avoid flying in a new commercial airplane until it had been in service a few years."

In much the same way I won't touch a Microsoft product until the second service pack.

[Truth29]

"I have pondered both of your replies and can’t decide which one weighs more heavily on my mind."

Just picture flying above a small bomb which has a containment vessel built surrounding it to limit any explosion. Sleep tight. Also, as null and void stated, Boeing has lost the reason, or at least part of it, for using this type of battery which was less weight and smaller size.