We actually had a discussion about this feature a few months ago. :)
https://bugs.chromium.org/p/chromium/issues/detail?id=774312

The consensus in the bug was that the feature needed to stick around, and that while the metrics weren't overly useful, they should also stay if the feature was going to stay.  Additionally, many of Rui's latest designs involve clicking that icon, so it may be useful to have before-and-after counts if new UI designs will draw clicks towards it.

TL;DR:  Issue 774312  was closed as WontFix, and I'm not sure this is any different.