I wonder if this is intentional: https://clojurians.slack.com/archives/C03S1L9DN/p1645277122399919

I believe it's intentional instance? essentially outputs a JS `x instanceof c`, which walks the prototype chain of `x` to see of `c` appears. because protocols are meant to be dynamically extended to objects (including native objects), you wouldn't want to change the prototype in a way that would make that work. but at the same time, `instance?` matches the object model of JS so that it works the way one would expect when checking if e.g. `(instance? js/Date (js/Date.now))` and is also very fast