Is there a line input on newer MacBooks? I thought the jack had just mic input! Also, does anyone knows whether the orange dot shows up when you also use an ex

Is there a line input on newer MacBooks? I thought the jack had just mic input! Also, does anyone knows whether the orange dot shows up when you also use an external USB audio interface? If so this is kind of stupid on the part of Apple. The article also mentions that those apps turn on Microphone capture even when unnecessary, so it seems the dot it's doing its job, although obviously there was a massive oversight, and there should have been a special permission to disable IMO.