As long as it’s not “spammy” and there’s actual engagement or discussion on the posts I don’t see an issue. But if the community being posted to isn’t engaging with the posts, or it’s crowding out the more interesting posts, yeah that’s not great and shouldn’t be allowed.
I do miss the spontaneity that existed when games were smaller. It made ideas feel much more organic and flexible, and everything just happened faster with fewer people so you could pivot quickly if you wanted to. Out of curiosity, I looked on Wikipedia and this is the blurb talking about the design of Joust. It’s cited as coming from Retro Gamer magazine Issue 63, but sadly it looks like the current publisher has requested it be taken down from the Internet Archive.