As someone who occasionally does professional photography/ filming, the auto setting on your camera is fine if you’re just snapping pics. Where you’d want manual is if you were taking a larger series of photos and wanted to apply the same effects/ processing to the batch.
You’re totally right, but I would also say this is a great point for understanding/ learning photo editing software. More as a tool in your pocket so that when you don’t get a nice photo, you know what is or isn’t fixable.