Thanks for your feedback. You’re right; the feature is currently enabled by default.
Like with our other features, we chose to enable it by default because we didn’t think it would be intrusive on the table. That said, we’ve received the same question from other customers, so we’ve decided to change this in the next release.
The upcoming version will include two hooks for controlling the Metrics feature.
https://github.com/codepress/admin-columns-hooks/blob/master/ac-metric-enable-default.php
ac/metric/enable/default
This hook lets you change whether Metrics are enabled by default when creating a new view, or for views where the setting hasn’t been saved yet.
There will also be a second hook:
https://github.com/codepress/admin-columns-hooks/blob/master/ac-metric-enable.php
This hook lets you control the Metrics state for any list table, regardless of the saved setting, similar to the hooks we already provide for other features.
We’re expecting to release the new version later this week.