I haven't seen many better examples of perverse incentives than the law enabling parents to skip retirement planning and live off their adult children. It's not childrens' job to "bring up" long-term care planning with their parents. The time for that was decades prior, when the children were young and maybe the family didn't get a new car or go to Disney and instead put some extra money into retirement savings.
It cheapens the parent-child relationship for seniors to treat their children as legally owned bank accounts who have to pay for their retirement living and medical bills.
And the expression "fear could be a good thing" is downright ghoulish in this context. You shouldn't have to fear losing everything you've worked for in your life because your parent tripped and needed medical care. And no parent should want that for their child, so who even supports these laws besides lobbyists for hospitals and care homes? If a parent is in this situations, there's usually a reason.