Earlier quoted context omitted.
The point of bitcoin is that you can drive across the country "carrying" $1B worth of assets, and if you get pulled over by the cops it won't be found. Try doing that with gold bars or stacks of cash.
Plenty of rich people drive or fly across the country all the time "carrying" $1b worth of assets. They're called bank accounts, and you can access them with these things called "check books" and "debit cards" that you can use in infinitely more places than you can transact Bitcoin or other crypto.
In lots of countries this is not guaranteed. Most recent example is Venezuela, central authorities imposed limited withdrawals.