Topic on Talk:Subnautica
Should the Epic Game store version really be classified as DRM-Free?
It is required to have an Epic account in order to install the game, you do not get a complete set of offline installer files to cleanly install the game on a new system (eg GOG, some Humble games, itch.io etc...).
I can definitely see the command line argument note as useful information to keep, but "Not Launching Client != DRM-Free" since an account is obstinately required to ever install the game again after initial purchase/download.