These are basically small concrete boxes sunk into the ground. They’re only meant to stick out a bushfire for a few hours.

You could probably just keep a few bottles of oxygen or a carbon dioxide scrubber stashed in there, just in case. If you can spend $10,000 on one of these bunkers, spending a few hundred more isn’t going to make a difference.

Anything longer than a few hours would get dicey anyway without room to move around, without room to stash water or food, without a toilet or beds.

and you’ll note the heat map correlates with wealth (and thus smartphone access).

It doesn’t, or else there would be a lot more sightings all over Europe, South Korea and Japan, Australia and New Zealand, Israel, Saudi Arabia and various emirates, and a good junk of China.

Also, smartphones didn’t exist for the first 101 years of the reporting time span.

Yup.

Facebook has been around for almost two decades.

This is not some unknown guy - we know exactly what Facebook’s business strategy and ethical and moral conduct looks like.