Pretty much. You can download images with everything bundled and ready to go (e.g., deploy a new container image instead of upgrading your Radarr version in place) and keep them separate (e.g., Torrent container goes through vpn but your media server doesn’t, Radarr upgrade going south won’t affect your Sonarr install, etc.)
Incognito mode has always been intended for prying eyes using the same browser, and it works fine for that.