Global lifespan is not that high, this refers to Western world, some Asian and small islands have people reaching 120 years with grace.

The world would need to make massive adjustments to extend life in this manner, most countries do not have institutions able to look after people in old age.

More older people working longer, less young folk able to find employment. The need for plumbers, electricians, farmers, personally I don't see AI taking over everything in a hurry.

Living to 200 plus, no thanks, not unless you really have everything in place to keep going on without eating from the garbage. An interesting article and some food for thought.