The article calls this a "bug", but I don't see how this can be anything other than working as intended?
I generate a link X to do Y on application Z. I post link X on a public website. Crawlers index the public site. When I search Y application Z, the page containing link X is returned in the results.
What action is the author expecting? For all search engines to recognize and ignore these URLs? What about malicious actors? Ask them nicely to ignore?