The statement that a single analyst can eavesdrop on domestic communications without proper legal authorization is incorrect. Does "proper legal authorization" mean a warrant served according to due process? If not, then it's still Tyrannical, whether it takes one analyst or ten.
"served" isn't necessarily part of the equation ~ they might have to get a warrant, but if you've flown the coup that doesn't prevent them from doing the search and seizure.
There are people who imagine that's the case though so they run from the process server ~