This reminds me of a mithril project where my state management library was just a global variable. It was a breath of fresh air: simple code, snappy UI, no convoluted debugging.
Yep, Mithril's redraw system is definitely one of its strengths since there is no plumbing necessary. You're free to do whatever you want without any weird adapter libraries. You can build some decently robust state containers without dependencies or Mithril-specific code[1].
[1] https://mithril-by-examples.js.org/examples/tweeter-box/