Unfortunately on macOS right now there are multiple apps that create icons in the main menu bar, including Skype, Razer Synapse and more. The Unity Hub is now one of them, while older versions were not. While others might find this feature useful, I do not. Instead my main menu bar is cluttered with icons. So would you please add a checkbox in the settings that let me deactivate the menu bar icon? Good apps let me do that. Don't be a bad app Unity Hub. Be a good app.