@FantasticalEconomics @504DR @mwt @jackofalltrades @lienrag @phil_stevens @GeofCox @gerrymcgovern i checked and there are 143 (out of 3.6k) open issues on the mastodon repo that include the word "thread" :-) So awareness of the issue is probably covered, whether something can/will be done soon is another matter. Others having solved it should help.
But there is a deeper question how to support ad-hoc, long-winding multi-user discussions. In real life you might have a person act as coordinator.