Whatever your thoughts are, there is no chance, in economic terms, of this smaller group of taxpayers supporting a larger group of elderly , and potentially, needy and expensive people.
Does this apply regardless of how the elderly have spent (or saved) their money in youth and middle age? If so, how do you plan to regulate their spending whilst keeping money circulating in the economy and simultaneously ensuring that they are self-supporting if they need care? Or would you encourage everyone to spend (and thus circulate the money), even though it would mean that 'the taxpayer' picks up the tab? What about people who have never paid income tax? Do they still get free care? Or does the hatred of 'freeloaders' extend to them, too?
Far easier to pick on those who have paid in for decades, maybe bought a house to live in and hoped to give their children a better start in life than they had (or more likely grandchildren, by the time the children are in with a chance of an inheritance). Make them think that they are 'privileged', and should be proud to get back in their place so that the next generations can start from scratch again - it makes them work harder. Meanwhile, those who started from an advantaged position (maybe simply by the accident of living in a house that is worth 20 times more than it cost) can afford to pay care home fees and pass on a comfortable remainder.
Levelling up? Given that for every person who gets a leg up, someone else becomes slightly less elite, that is never going to get the popular vote, is it?