I have been paying attention a lot, but I think that statement is pretty extreme. I worry for my kids, but time horizon has a lot to do with it. My parents both died at 93, so I have less than 30 years to go, and 93 is a lot of good luck, probably the active part of that is 10 to 15 years. I thought a major breakthrough on health was possible during my lifetime. Never counted on it, or even wanted it, but at this point it is looking like assisted suicide is the main one in Canada.
The US is not falling apart to RSA levels in 15 years, and RSA will keep on getting worse. The problems are different. In a country of law abiding people with great services and once great institutions, the issue is that you can get organized terror, as we did during COVID. You can get organized repression. In crappy countries, that aren't organized, you get collapse, possible violent outbreaks, or revolutions. Neither is good for old people, but on balance the place you were born, understand, and have some rights and status, is still a better bet. Foreign countries are good if you have money, and the local scene is peaceful enough you don't have to worry about getting robbed and murdered for it.
Relative to the US and Europe the flow of emigrants is basically one way from Africa. Is it wise to settle there for retirement, in RSA, of course not. It is crazy. But I also think it is the wrong measuring stick. If I were doing it, it would in part be because I want a life of adventure. An adventure is something that stretches you and is worth dying for. Quantifying how much risk is up to the individual. Climbing a ladder comes with some risk. I loved my climbing life, don't like ladders. I am not willing to die climbing ladders, so I use the climbing gear to insure it is impossible. If I could get back into climbing, I would be willing to take the risks that go with it because it is such fun.
On the other hand, I am currently reading the book of Isaiah, for the first time, and every paragraph, pretty much, ends with the warning, "and that is Vanity". He ain't wrong.