The philosophy was that anything visible in a context menu should also be in the app-wide menu bar. Instead of bring up a context menu and click Copy, you would find the Copy menu item in the menu bar. Therefore such menu items can be assigned any keyboard shortcut by the user.
> Always make context menu items available in the main interface, too. […] In macOS, an app’s menu bar menus list all the app’s commands, including those in various context menus.
Therefore one can rightly conclude that there is no need for a key to bring up a context menu.
I quote from Apple https://developer.apple.com/design/human-interface-guideline...:
> Always make context menu items available in the main interface, too. […] In macOS, an app’s menu bar menus list all the app’s commands, including those in various context menus.
Therefore one can rightly conclude that there is no need for a key to bring up a context menu.