Thanks for your suggestion. But I don't think it is necessary. If a user doesn't want to show the label description, we have to create an option to hide it. So let's add the description if you want to show it.
In my case I do not need to show the label, but I do need to show the label description. Hence I left the Label field blank. But I added the label description.
Without label, the label description is not displayed in the frontend.