You have illuminated a hole in my security, for which I thank you. When I saw your thread topic, I thought maybe you just couldn't find it because I remember recently toggling it on and off.
So, I logged in, and sure enough, it's gone. I also checked the desktop dashboard. So... I think you're right. It's no longer disabled on my lock screen, which I had been thinking it was. Going to request the re-addition of this feature.