They're not all for internal links to OS-related information hosted on the web, though. The start menu search will always open a Bing search in Edge, for example - doesn't matter what your default search is set to.
Why are you writing with certainty about things you apparently have no firsthand experience with?
They are OS-generated links. Kinda funny that you claim I don't know what I'm writing about when the very example you give is an OS-generated link.
The start menu search is very much integrated with the OS and even gives you result right in the menu. Would be weird if the result shown in the menu would not be the same as the ones shown when it opens a web-browser?
But I guess you did not stop to think about such minor details.
Why are you writing with certainty about things you apparently have no firsthand experience with?