I doubt very much that the president would receive the same level of attention and prioritization at an ER as a homeless person, but even if you substitute a we

I doubt very much that the president would receive the same level of attention and prioritization at an ER as a homeless person, but even if you substitute a wealthy person in 1960 for the president you're still wrong. Let's say that the homeless person develops a form of cancer that was incurable in 1960 but can now be treated with a very low rate of recurrence with chemotherapy. Your point, I assume, is that because this new treatment exists, this homeless person will receive better healthcare than anyone in 1960. But that presupposes that this homeless person has access to that treatment, which means that they need reliable transportation to a medical office on a regular basis for an extended period of time, they need someone to take care of them when they're really sick, they need some ability to get their medication and to take it regularly.