Ideally the license could be a bit less far reaching as well. Like if I post on D&D Beyond I obviously want my crap to be shared on D&D Beyond, but not shared for only god knows what else, i'm not really on board with that.
In a practical sense what is the effective difference?
I've heard half a dozen people say the same thing. Did you copy their work? Should they sue you? (No of course you didn't; but it turns out the concept isn't particularly unique and precisely illustrates why terms like this exist).
Yes (though they don't want it), but the important bit is that they can't stop you using your content, because you still own it. That's the difference between a license and ownership, and why it's important to distinguish between the them. They're different things, with different effects.
That's basically so if they move platform in a few years, they can move the user content too; or if they are acquired, or sell the platform to somebody, they can legally transfer the content. Otherwise they'd have to delete it all--and guess what? People are historically very unhappy when all their content is deleted.
Sure. But... they don't want your forum posts. Honestly, your forum posts are not worth anything. They're just covering their asses in case they make something and 12 people say "they stole my idea!" (as has ironically already happened in this thread). But that's been said a billion times, so you know that.
