One side of my family is Chinese/Jamaican and the other White, so both cultural sets of values exist in my family and both sets of grandparents are worried about being a burden later on and while the polite thing to say is that they aren't, they genuinely are, especially if you don't have a lot of kids or they don't live nearby.
My Chinese/Jamaican grandfather had to leave his mother behind in Jamaica to build a life here in Canada and she supported that decision as it meant breaking the cycle of poverty for good. None of her descendants (at least for a while) would own nothing but two old dining chairs.
Moreover, the elderly in 3rd world countries tend not to live as long, many of the old people in Western countries are.. for the lack of a better word, living far past their expiration date.
The system is a shambles everywhere.
Once you need round the clock dementia care, it is more than extended family can provide — unless one or more adults take themselves out of the workforce for years.
Most people can't afford it and last time I checked, Medicare doesn't cover it at all or not enough to make it affordable.
Of course in the 80s and 90s, long term care was much more affordable and wasn't as, uh, let's call it, profit seeking.
It may be incredibly hard to the point that it is even difficult to describe it