>Fed, housed and clothed is a great baseline, but it has nearly nothing to do with inequality. //

Inequality of what characteristics?

Because having sufficient food and clean water makes an incredible difference to ones fulfillment and ability to focus on less basic needs.

I'm pretty sure the parent comment to yours was referring to availability of healthcare [and associated aspects such as nutrition and exercise] according to needs, rather than expecting that we can get cancer to agree to a treaty.