The article gives a simple reason: some things support it. If you want nice snippets in google search, Instagram, zotero etc.. you can use it.
The real reason was always "so you can publish data people can use programmatically" but turns out this doesn't work cause the interest of publishers ("visit my site") and the interest of consumers ("I want an answer") are not aligned.
The real reason was always "so you can publish data people can use programmatically" but turns out this doesn't work cause the interest of publishers ("visit my site") and the interest of consumers ("I want an answer") are not aligned.