the scarier TEOTWAWKI is more like McCarthy's The Road, or perhaps Orwell's 1984 would be apt as well.
No electricity. Famine & thirst almost everywhere. Anarchy and chaos (the bad kinds). No modern comforts. Pandemics and violence.
In such, I believe that I would just give up beyond a certain point.
You guys are not very good economic collapse planners. For one thing, there is A REASON the majority of large human settlements through history have been bordering the ocean. If the crops go bad or if there's some type of scarcity issue, people just ratchet up the fishing. There will be no global "TEOTWAWKI". There will be many places of low population density that border the ocean where people will fish their way straight through it no matter how bad the economy became.
If the JIT delivery economy collapses, fishing will be the #1 workaround to that. There is no possible better location than a low population density area bordering the ocean. As for Anonymint, there's a lot of people stacked like pancakes in the Philippines, so you'd probably need the ability to go far out in the ocean to make due with all that competition. I mean, if the competition is that high, you would basically be living out at sea.