I actually think it makes a lot of sense that the exBs wear clothes. They are rediscovering their individual personas, some perhaps discovering them for the first time. With that comes all the confusion about privacy, personal space and individual agency. Clothes act as a physical barrier between the world and themselves. A practical expression of the space that now exists between them and others. It has nothing to do with nakedness, or their comfort with it. It reinforces the idea, every time you look at another exB, that they are separate and individual and have privacy of thought as well as the physical privacy afforded by not being naked. They also provide room for personal expression, which should be encouraged among a group that had been trapped in a hive mind.