It's easy enough to check the edit history.

I just did, it was added with this edit ⚠️ ↗.

The editor only edits a few times a year, in spurts.

Registered Wikipedia editors with email privilages and who have configured their accounts for email can send this editor a note. Doing so will reveal your email address. There is no guarentee the editor monitors the email address registered with his Wikipedia account of course.