Aren't they multiplayer only?
On their site it says 3 Multiplayer DLCs only...

http://doom.com/en-gb/dlc

Denuvo has been removed...
Here are the Singleplayer only changes

Update 4:
Additional DOOM Single Player Consistency
Additional DOOM weapon upgrades from Campaign – mastery versions of the HAR and Combat Shotgun
Campaign-styled communication HUD elements
Editable interactable GUI
Additional FX and ...

Also through some file checks from the Plaza rls it's not possible to update...