U guys should have imposed a certain requirement for the title purchases before it could be bought. I don't think someone who hasn't completed at least three islands with a well renowned infamous character, canon or not should be qualified enough to purchase a grandiose stuff.
It's like telling us that Luffy who has just sailed from Loguetown is terrifying enough already that anyone who hears his bountiless name will piss in terror. Lmao.
They're not IC titles, which is exactly why they were changed from official stuff like Marine Hero and Baby Yonkou.
It's just the name of the item. It doesn't give you any more fame or respect in the world.
Also one can't discriminate too much with the items anyway, because it'd interfere with a character's personality and story. For example, Akira having any of those items makes 0 sense, since he is a faceless unknown Assassin. But we can't stop him from buying them as they're an integral part of the game. Consequently even if you did the 3 island rule, if nothing significant or ''wow'' was done in those 3 islands, it'd still be meaningless. But you can't force the person to do something crazy, and some people's character's are quite mellow (Ziosa for example).