Actually, factually she did harm the game, it's not just opinion, by having all those awards and stuff made and given to her and ebizou, she took time and effort that could have been used to improve the game away,
Ebizou and all gangs that monopolize basing actually made it more difficult for newer players and took away from the aspect of basing because of their gang being made streamlined so normal gangs had very little chance.
She also hurt this forum, that is also a fact, as Rufus can assure you, during the time Mayu and Ebizou came, their was a dramatic increase in Deleted comments, deleted threads, and closed threads, relating to Ebizou.
Unfortunately without access to mod rights and proper tools I cannot graph this for you myself.
She caused staff- staff conflicts, as demonstrated in threads, and admitted over the subway affair.
Doubtless, if you surveyed the players, it would be seen most players views of Mayu are negative, as you can tell by posts in the forum. As for purity, it was observed that she had lied, in one case a staff member even posted her profile with her deaths to prove she was lying. She also made comments that would by the common English and American societies be considered under the definition of bragging, slander, and conceited as defined by the majority of dictionary's, and thus not proper conduct.
So yes, your opinion is Mayu did not harm the game or community and that she was pure. As demonstrated by the facts here, your opinion is incorrect.
She was a harm to the game and it's community, and was not pure in conduct.