I don't agree with the website, but I think I know where they are coming from.

The year 1971 was when the US dollar was made to float, instead of being backed by gold. [1]

I think that the website wants to have our monetary system change back to being backed by something that is a limited resource, and I bet Bitcoin fits the bill in their mind.

[1]: https://en.wikipedia.org/wiki/Gold_standard#In_the_United_St...

Edit: punctuation.

Are you saying this because of the quote at the end of the page?