Good news regarding the IMDB forum boards. There is a perfect alternative.
And it’s actually an archive of the old IMDB forums which contain the latest forum topics until the forums have been shut down.
Here is a website that stores all the old topics and you can even create new ones.
Check this hilarious topic from the Aliens movie: https://moviechat.org/tt0090605/Aliens/58c746386b51e905f67177a4/IMDBBBBBBBBBWE-ARE-LEAVING.