I was talking to people about it in a Facebook group, and a few big shots were talking about how that was easy, no problem and that’s a small pension where they are from.
I pushed them for details and they weren’t talking about pensions at all.
In theory an annuity might work, but if you are 60 years old when you purchase it, it would cost 1.250 million USD which is kind of a lot just to qualify for a temporary visa.