I think you're taking the tweet a little bit too seriously 

The consequences of somebody getting old. I'm not THAT old, but well...

The "post-apocalyptic wasteland" is a joke, he was probably referring to the fact that some bitcoiners hope for a total collapse of the dollar, of the stock market, of fiat in general and think that everybody would suddenly buy a ultravolatile, ultrarisky, not-really-scalable experimental digital version of gold as a consequence 
If the fiat system collapses, BTC will be the last thing people are gonna think of. If BTC is ever gonna survive and succeed, it's definitely not as a replacement of fiat, that's just delusional r/bitcoin stuff.

If the fiat system collapses, BTC will be the last thing people are gonna think of. If BTC is ever gonna survive and succeed, it's definitely not as a replacement of fiat, that's just delusional r/bitcoin stuff.
Wait, I thought he was a SHE

Nevermind. I don't believe that BTC will replace anything short-term or mid-term. I'd say the most possible scenario would be a co-existence with the current monetary infrastructure. How epidermic or deepened this will be, this is left as an exercise to the reader. FWIW though, I strongly suggest to anyone I know, that it's better to be unorthodoxically prepared, than not be prepared at all. That includes -and not isolated to- a fair amount of BTCs "just in case".

You really are old. Taylor Swift is the new David Bowie.