It is not some really useless html tag search, it actually searches CSS selectors (same as what you use with css, querySelector in Javascript, or jQuery selector)
So you can search #id
, go through all elements of a certain class by searching .class
, you can even search for all elements with attribute including text, for example [class*="o"]
should give all elements with letter o in class attribute. This is helpful for what designers/developers want to find - to find text, you can Ctrl+F within the page, then right click, inspect element.