Wikipedia refers to the deep state as a conspiracy theory. Whether that designation is accurate depends on your definition of “deep state.” If you mean that there is a dangerous group within the federal bureaucracy working to fulfill some of the fears spread by QAnon conspiracists, then the conspiracy label is accurate. But if you are talking about life-long bureaucrats buried deep within the federal bureaucracy who are unaccountable to the American people and often more interested in
The Deep State their survival and their department of the bureaucracy’s survival, then the conspiracy label is incorrect.