I don't know if misspelled on purpose, but I think the original name is a more accurate description than the typo (Discourse). Because it sure does create a lot of discord (disagreement and lack of harmony)
You might as well go to the Arch Linux forums or Stack Overflow. Where someone will berate you for bringing up an already discussed topic that is difficult to search for. And to rub salt into the wound, they almost never provide the cross-link...
Back on topic (kinda):
Man, I really do wish Signal would allow you to pin or bookmark messages. It sure beats the cluttered chaos of scrolling, searching, or forwarding to Notes To Self (which lacks a cross-link back but at least gives you precise search queries).