Metadata is important because it controlls the way people view websites. It adjusts aspects of the website to make it more clear.
For example, the "description" describes the content of the website and can be helpful for viewers to understand it. Also, the "viewport" adjusts the visible area of the webpage
Additionally, metadata is important because it communicates to search engines directly, to convey important information or request a specific search.
Also, metadata can help classify and organize information more efficiently. The information could be more accessable to viewers because the use of metadata could easily help define keywords for search engines to identify.