As someone who has dealt into this quite recently, I can confirm that it hasn’t really changed that much. The documentation for integrating clients and bots is just old or wrong or non-existent. The complexities of getting authentication right and even getting messages validated between two human clients was really much worse than it should’ve been and it’s just not in a position where normal people can use it just yet. That said, I’m hopeful that government adoption could make it right quite quickly. And adopting it within a managed setting would mean that the UX could be ironed out fairly quickly.