First principles
As a rule, I'm not particularly interested in any intellectual exercise that starts from first principles. That seems like a good way to head straight towards dogma that's quite divorced from the complexity of life.
Nevertheless, for this project, it seems appropriate. If nothing else, it gives the project some scaffolding. I like to think that, some time hence, I will think differently about at least a little bit of the following.
In any case, here are my basic assumptions.
It is more comfortable, for at least some people some of the time, to be relatively naked versus relatively clothed.
Comfort is a good thing, even if discomfort is not necessarily always a bad thing.
Although a more complex breakdown is possible, we can speak for now of two kinds of (dis)comfort, which may be experienced simultaneously: physical (dis)comfort and psychological (dis)comfort.
For many people, the physical comfort of being relatively naked—that is, in a condition of nudity—in a given situation is off-set by the psychological discomfort that is attendant to the same condition and situation.
People are more likely to feel more comfortable naked in a given situation if they have had experience being naked in a similar class of situations (i.e. in a private bathroom, in a public locker room, on a nude beach, in the common space of a collective household with frequent guests, etc.).
Social norms, usually enforced at the household level, usually serve to discourage nudity, especially full nudity, in all but a limited set of quotidian, non-private, non-sexual situations, usually pertaining to swimming/bathing (though in the most puritan settings, even this limited set of situations is absent, with swimming/bathing either a wholly private activity or otherwise requiring some kind of clothing).
Various practical problems arise when, in certain situations, people are not willing to get relatively naked, fail to consider that that is an option, or cannot tolerate sharing space with other, naked people.
It would be to the good if there was a general expansion (not necessarily a comprehensively total expansion) of the option to be naked in various social settings.
A general expansion of the option to be naked would require some kind of reasonably effective political/cultural movement to champion it. The modern naturist movement is not up to this task.
To the extent that anarchists have an interest in individual liberation, they should be interested in the ideal of “body freedom” and, as a consequence, a general expansion of the option of nudity—even if most anarchists will more highly prioritize many other concerns first.
Although naturism is politically and culturally moribund, most people and collectivities could learn from it with respect to best practices around quotidian, non-private, non-sexual nudity.
And I guess that's it for now. My final comment is that I sort of see this project as largely one of translation. I want to make anarchist critique and ethos accessible to adherents of naturism, and I want to bring certain concerns—which, in my own life, have usually felt “bracketed” from other parts of my engagements with social movements, philosophical discussions, etc.—into a place of some prominence within the broad conversations that anarchists are having with one another.