What is the purpose of the HTML <data> tag? Does anybody use this tag?

How does it differ from the data-* attributes used in other tag elements?

Documentation indicates it is for machine-readable information. What machine?

Is there an example of how the HTML tag <data value='12345'> Jumbo Shrimp </data> would be used with javascript?
(Reference example at: https://www.w3schools.com/tags/tag_data.asp)