Duncan: Paragraphs 3 to 6 tell you that riding on the Road (Public Highway) is illegal. It also says that although the Law is, in their opinion, out of date. That is the law of the land.
I find it difficult to read the article in any other way.
I'll admit that the article suggests that, if you ride considerately on the pavement, you are unlikely to be prosecuted, but this is also true for pedal cyclists.