This is the correct point of reference, but you are misinterpreting it and I urge you to think about it again. All of the government's facilities put together amount to almost nothing in the data center landscape, therefore it should be quite obvious that they certainly are not equipped to broadly intercept, store, and search "everything".
Why should they when they have access to FAANG? No need for massive data centers.
"A former senior U.S. intelligence agent described Alexander's program: "Rather than look for a single needle in the haystack, his approach was, 'Let's collect the whole haystack. Collect it all, tag it, store it ... And whatever it is you want, you go searching for it.""
https://en.wikipedia.org/wiki/Keith_B._Alexander#NSA_appoint...