Earlier quoted context omitted.
The problem is the intractable dispute about what things should go into which category. Empirically, there has been a strong historical tendency to move things into the "NEED" category that were traditionally in the "WANT" category. For example, indoor plumbing was considered a grossly extravagant luxury for almost all of human history. Within the last hundred years, the richer societies have made laws (building code…
>For example, indoor plumbing was considered a grossly extravagant luxury for almost all of human history. Within the last hundred years, the richer societies have made laws (building codes) that have switched it to a "NEED". The same thing happend with indoor heating systems. Yes, we rather do like preventing dysentery, bubonic plague, and flu epidemics. Public health is indeed a necessity rather than a luxury.
The details of a specific proposal are not relevant. No matter what specific items you choose for these categories, eventually people will want things you say are "extravagant luxuries" and call them "needs".