Ever I'd hope not, but it would make sense to check if a discussion was already started a week ago and add to it rather than start separate ones constantly for each new piece of news - but not as a strict requirement, just an ask. After enough time there tends to be additional development/information which makes using the old conversations useless.
For most of the people on this board, they'd do better to spend that time touching grass as opposed to searching for something that people might have talked about anywhere from 1min - 365+ days ago.