I get your example, and agree with the premise that “if you have nothing to hide…” is never a good argument, but if someone had security cameras surrounding/within their house, and 4 different locks on their bedroom door, and then a high quality safe in the bedroom, I would absolutely think there’s something more than sex toys in there. That’s still never a valid basis to search their stuff, but if there was nothing significant in there, that would feel odd.