I would say we'd want to have different options maybe:
- Exclude query parameters
- Exclude path (basically only record the subdomain domain)
- Exclude subdomain (eg someone coming from example.matomo.cloud be still identifiable possibly). We would in that case only record
- Nothing, only record the type of referrer type
This can avoid tracking personal data since the page a user comes from, might include it's name, or some ID, etc.