It's just plain daft. If he want's to be naked in the open air, he needs to find a naturist club. In spite of the weather up there, there must be one in Scotland somewhere where he can tear his clobber off the minute he walks through the gate?
But only a bit, especially in winter. Why is it that those who insist on going nekkid in public are always the very ones who shouldn't? Gymnasts, lingerie models, sure, but why only ever the plug-ugly ones?
It's Perth in Scotland, not Perth in WA, so it's summer at the moment. (This means that the temperature is a balmy 15-20 C as opposed to the midwinter temperature in the upside-down Perth of a chilly 15-20 C.)
Whilst he doesn't seem to be deliberately upsetting anyone, I would question his sanity. I'm not saying he is a nutter, just he might have a different slant on life, which is out of kilter with the Establishment. He was, is, perfectly harmless yet he seems to have spent more time in clink than some proper scrotes.