Why is this a thing?

Kay, so this probably doesn't deserve its own thread, but I was mildly curious as to why there would be a button to SHOW locked games, instead of hide them? I haven't played customs in a while, and was looking out for anyone doing a plat vs silver, or whatever. I went to hide the password protected games, and the only thing I can do hide public games??? Like, when am I gonna go there and say "lemme go and see all the games with passwords today! that's a wonderful idea!"

But seriously, is this really a thing, or am I overlooking the button to hide private rooms? Cause I feel like I must be, and I'll feel pretty dumb when I finally do find it.