User blog comment:Rappy 4187/Technical Update: August 31, 2015/@comment-5558012-20150901003221/@comment-5558012-20150901005103

I didn't think of that specific reason but what I was thinking was that if someone gained assess to your account the preference wouldn't matter nor does it help if you have the preference checked and someone edits your account. You could also turn off js through URL Queries.