Is it a best practice to bypass sharing rules in Salesforce Duplicate Rules for global duplicate detection?

Hi everyone,

I have a question regarding Duplicate Rules design in Salesforce.

In a current implementation, we are evaluating whether to configure Duplicate Rules to effectively consider all records in the database, bypassing record-level security (sharing rules), in order to detect duplicates globally (across all Accounts/Contacts and companies).

The idea would be to run duplicate detection across the full database (not limited by user visibility) 

My question is:

Is this considered a best practice in Salesforce architecture?

Specifically:

•  Are Duplicate Rules expected to always respect sharing rules and user visibility? 
•  Or is there any recommended pattern where global duplicate detection (system-level) is acceptable while still maintaining security in downstream processes?