But crypto may provide more sensible solutions than blanket rules like '1 coin per 1 person per week'.
I know about this "sensible" solutions, XRP and other coins are representatives of them. My world is VERY easy and "unsensible", I'm serious. The same weekly amount to every individual all over the world. For the first time coins with a value of two dollars a day are enought.
1) A currency first has to "produce" something, before it can be distributed as a new store of value, otherwise you are trying to redistribute somebody else's 'wealth', and will be in a weak defensive position. The best beginning of this step, to my knowledge, would be something like a crypto that requires human interaction. So called "capcha" coins are a poor misguided sidestep in that direction. It would be an easy thing to do though. The only coin that has made serious progress in that area, as far as I know, is huntercoin.
2) xrp etc are not currencies that focus on distribution models, aside from airdrops etc. xrp is a corporate currency, not more not less. It has nothing whatsoever to do with any distribution balance.
3) Giving the exact same amount to every individual makes no sense either. Aside from the distribution side there is also services/supply. Should an individual who needs expensive medicine have to do without everything except that medicine, while another person gets easy money to spend all their time stoned? Nothing wrong with getting stoned if that's what a person wants, but it should not be subsidized the same way as survival.
4) the basic point you make is accurate. If a currency could distribute $2 in useable currency to every person, it would improve things more than it would worsen them, for most people. The main bottleneck has to do with things like education. you could look at coins like humaniq, that claim to have that ambition. Even then there are lots of small issues. If you distribute by thumbprint to the uneducated then there will be a market for severed thumbs in some areas.
5) Another consideration is the carrying capacity of the planet. Crypto does have the potential to quickly extend lifespans and similar things, but even today we still have policymakers who make large decisions based on demographic considerations, if you want to call it that, or 'population control'. Until there is more effort to extend available real estate to outer space there will be many people who will sabotage efforts to create a level playing field for less wealthy places.