Summary: It does list a couple of bots spreading exchange rate information and articles from blogs on the topic. There’s one for evert major currency.
As I said in the article, that’s just a start. Mastodon is quite new and not yet fully expanded, e.g U.S only have 37k users.
Following the publication of this blog post, I was contacted by the Duniter Project for Libre Currencies and added their Mastodon account to the list. Hope this article will improve with great content available on the Mastodon network.