Ya it was a bug. Now the bug has been fixed as claimed over here. As you can see the edit history the profile pic error has just been sorted 1 hour ago. When I clicked on your photo I can see that now your purple pic is coming. Even community profile pic issue has also been sorted.
Answering my own question to summarize the feedback from comments.
I'm reasonably persuaded that I misinterpreted "Not suitable for this site" as being a paraphrase of the "This question belongs on another Stack Exchange network" option, which was the reason I thought the two explanations were inconsistent.
Instead, one should read "...