Tiny Libraries are cool but they aren’t even a pale shadow of traditional public libraries that come with commitments to levels of service and access to people of all backgrounds and locations and incomes.
Further reading: The Library Book by Susan Orlean
Also I'm not sure they'd actually come into existence everywhere, even if the internet is a poor substitute for a library it is cheaper and may be enough for many.
Definitely nothing interesting.
Unfortunately reality does not "inevitably" progress towards utopia, any more than the life of any individual does.