I have always understood the WT advice to be as is stated in that quote above . Christians never should commit violence but if personally threatened Witnesses are perfectly free to fight back , even harm their assailant if they can . Nobody ever said that God would save you, He doesn’t. They are not pacifists, just neutral on national conflicts.
An old Cong Presiding Overseer of mine disturbed a young lad interfering with his car . He called him out , the lad raised a hand and they struggled…. then another lad joined in and our Overseer came off worse . He had his arm and hand bounced up for a week or more … Nobody criticised him , it seemed rather funny at the time.