@Diogee thank you for throughout answer. Would it be safe to treat one as extensions’ messages with IRC support are not currently being planned or developed?
If so allow me to propose default fallback message broadcasted parallely with full native chat one but to IRC only. Smth like “there’s a notification from extension streamer is using. Use native chat not to miss any”. Thus such would both partially solve 3p issue and serve the goal of moving streamers to native.
In terms of interactive messages. Dope!