As instance I cite the farce that is known as email. Architectural and design decision were made which did not consider the mass adoption of email by billions. Nor were the possibilities of incompetent, untrusted and malevolent actors considered. As a small illustrative example. Why, aside from the godlike feeling of absolute power conferred, do these servers allow sysadmins (or anybody who has hacked their account) to view or search the CONTENT of emails. The mail server programs implementing these flawed protocols were and continue to be kludges requiring near genius levels of competence to correctly configure and maintain.
These flaws were and are directly responsible for the tsunami of email spam and malware which began all of twenty years ago. The response was NOT to realize that the protocols were flawed and that serious refactoring was required. Instead castles of sand were built on top of quicksand. Heuristic Bayesian spam filters I'm looking at you here. This non response has directly enabled hundreds (if not perhaps thousands) of millions of dollars worth of damage and computer fraud yet still the protocols and programs were and still are not redesigned !!!
One could go on and on with similar critiques of virtually every piece of tcp/ip's fundamental infrastructure. IPV6 is not a counter example as some twenty years later it formats approximately four percent of internet traffic. These, not merely, and in addition to, the presence or absence of cryptography, I believe, are the privacy busting facts to which Mr Snowden alludes and refers.
If such serious monetary damage cannot impel substantive action this poster asserts that it is difficulty to imagine Mr Snowden's totally laudable revelations and prescriptions having any effect whatsoever.