Earlier quoted context omitted.
> It's a simple way of making it impossible to see the actual Referer to external website It's about tracking outbound links, not about masking the referrer. As already mentioned, there are standard ways for that.
Tracking can be done in JS via onclick event also. What makes you so sure it's not about masking referrer?
If you are not using it for tracking, there is no point in doing it like this after all.
[0] https://developers.google.com/web/tools/lighthouse/audits/no...