https://addons.mozilla.org/en-US/firefox/addon/utm-tracking-... I have never observed a “utm” query param actually improve the quality of the response. We all know why this obviously positive functionality isn’t built into the browser: because browser vendors rely on hostile business practices to survive. Still no technology to transact with the site you’re visiting for their content....
You have it backwards. It's more tracking for the webmaster/marketer to know what was popular and what wasn't.