Yes, that whole page you cited is simply tutorialism. And Mithril supports jsx. (Not to mention the advantages gained by avoiding JSX in favor of hyperscript)

Yes, that whole page you cited is simply tutorialism. And Mithril supports jsx. (Not to mention the advantages gained by avoiding JSX in favor of hyperscript) Might be best to actually use it in a small (or large) application of your own design rather than judging prematurely. (I’m not suggesting large orgs use Mithril, as other commenter mentioned, community in some situations is more important than the tooling. But “building a web app” does not necessarily imply “employing a team of local developers to build a web app asap for less than x usd”.)