Terminal tab number shortcuts completely messed in High Sierra
The answer to this is really unintuitive...when you don't have this option selected, the tabs show the shortcuts you want "cmd + number":


However, then you see this annoying issues where the tab shortscuts are based on opening order, even if you rearrange them. After selecting the option to switch tabs, the shortcut shown on each tab is misleading:


But, it now works with cmd + number in the tab order you see (without needing to use the "option" key.