Google to Remove Chrome “Close Other Tabs” and “Close Tabs to the Right” Options
bleepingcomputer.com
bleepingcomputer.com
These Google engineers are short-sighted. People who use the "Close other tabs" and "Close tabs to the right" options are also much more likely to disable sending usage statistics to Google (which is why its usage appears to be so low).
Like you, I imagine most who use those features are using chromium and not sending those stats to Google.