I think it's o.k. since you can't perform any of the above actions with yourself.
I have a "see my messages" button on my profile, maybe you don't have stored any?
The buttons will/should come up according to the player's status and relations. On your profile, I see the CC invite, add friend and invite to play buttons.
I can't message you because we are no friends. I can't block you - dunno why(?)