Nice "Rant" Bob.
Creating an invitation rather than a demarcation, makes terrific sense.
Ignoring the arbitrary social boundaries, the labels and the them and us, does create a vision, in the present. In this case, the signage does set the stage for a right healthy attitude, which is a lesson in itself.
There are those out there who still tend to divvy us up and want to judge, jury and executioner, in their own set of perspectives. They will still label and categorize everything. Most of us think that way to an extent to relate to the world, that's language. You kind of wipe the slate clean and bring us to basics here, "Covering is an option, I welcome you as you are."
Sure beats, "Hey, textiles. Screw off." "In your face frumpy goof, clothes suck!" 'Warning, Nekkid people! If you're obsessed with your rags, then do it someplace else"
The longer version, "I just really have a right to my choice and don't wish to impose my choices on others. I accept the fact that coverings can be practical in adversity, festive and fun. Now, can we move on to something else? Otherwise, I'm gonna lay on this rock and catch some nice rays, natural like."
Jbee