That styling is wonderful, and not just the typography. From the pictures in the article it looks quite consistent, too. I never knew of its existence, have to go look for downloadable episodes.
When I read the first couple of sentences I was going to mock the article. I remember the visual elements from the Prisoner but I more remember the costumes, the sets, and the large condom beach balls.
But then I looked at the pictures in the article and I'm convinced. The fonts tied into the visual style of the show. Maybe not to the extent of the rest of the filmography, but the consistency was a nice touch.