Ok thanks never knew about such discussion! But it is missing like hooks, events, triggers. Otherwise a plugin is almost useless and just hooking directly to the db would be more effective.
External bots, have one big downsode that kills it for most “plugin” use case, it is pull, many use cases want a push method over a trigger, event or similar. And to fetch the api every second is inefficient if you say so. Direct db access is not available for everyone.