A Chrome extension with two tricks up its sleeve:
Click the icon - Close all exact duplicate tabs (based on tab URL). That's it. Doesn't count 'em, doesn't interact with the user. Doesn't error check, honey badger don't care.
Right-click the icon - Remove popups, overlays, and scroll locks from the current page. Paywalls, newsletter nags, cookie banners, login walls - gone. Uses a scoring heuristic so it won't accidentally nuke your nav bar. Reload the page if you want it all back.
Don't want to load an unpacked extension? No worries, it's available in the Chrome Web Store https://chromewebstore.google.com/detail/tabmangler-click-to-close/jbcjjiblgiidajocohfpjdehcikdemdc