[quote=@Inkarnate]
They have in the past restricted me from adding a dynamic to a character because their character already had that thing. I also wasn't allowed to add anything to the sandbox setting in general.
[/quote]

Fair enough, then yeah I'd agree that wouldn't be very open. (I suppose with context it would probably be a more clear cut case. Or the term for supporting player may mean different things. [@Raddum] for instance, was morely suggesting that the person or group was selectively restrictive to newer players because they aren't used to that player. Which honestly is often the case to be expected for long running roleplays or otherwise, but that's just personal experience with late joining.)