It isn’t a rare example. That “one example” (which isn’t even accurate) represents one example too many, first of all. Look at the contribution history yourself: you’ll find many cases where changes broke things because the affected code was 7–10 years old.

There’s a reason Windows maintains near-total backward compatibility: a ten-year-old line of code may still be performing essential work, and there’s no inherent need to remove it. Your standards for what qualifies as acceptable deprecation are subjective, but the broader world expects software to maintain compatibility for decades.