Hi,
The help communities are peer-to-peer forums and the helpers are volunteers, not Google employees. We have no control over product improvements or general issues/complaints.
Ruler measurements are determined by the language and/or location of the user. You could try switching one or the other if having a certain type of measurement is important to you.
Please share your concerns about this directly with the Docs team by opening a Docs document and going to Help > Help Docs improve. The team is unable to respond to individual users, but they do review all feedback sent to them and use it to improve the product over time.
Jo S.
Google Docs/Drive forum volunteer
not a Google employee