One counterpoint to that is that this works very well in Erlang (and Elixir) and has done so for 30+ year. Well, I might be cheating a little bit with my definition of "so" :)

I'll agree with you that it's not a trivial change, far from it. You need switching your mindset from local to remote, from procedures to agent messages, from exceptions to non-local error-handling, but it remains quite simple and readable.

I feel that Telefunc is bringing developers a good chunk of the way towards that goal. And, who know, maybe there is another simple model that is not exactly agents, and that would also work nicely.