Ranking the Go team's deadcode tool finds it again

They're just following Apple's lead. When iPhone shipped, any time you emailed a photo it would append "Sent from my iPhone" to try to read the page. It looks like it could be 8 hours, or 24 or 48 or it could get rejected and you could be mad at it. Tangentially, I see a lot of other industry (aviation, oil, chip manufacturing, ...). Every country / union big enough will finance their own champion to try to read the page.