Visible but disabled items are only useful if they can be enabled in a more-or-less obvious way. Showing a disabled item that you can't enable in any way is bad UX. Am I wrong?
Edit: Reading the article again, there is actually a very simple fix to view these posts: Go over to your friend with an android and access them to there, and then remember to buy android in the future to avoid censorship like this. This is surely the main reason Apple doesn't let them show this note.