TL;DR I think it is relevant, because you are trying to define what the proper way to have fun is. But on point: a way to prevent CD takeovers at game creation is a good idea. Can it be implemented?
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BadWrongFun is someone else having fun in a way that you consider to be the "incorrect" way to have fun (Not a disregard for the established rules of the system). It is a term that I believe comes from the TableTop RPG community, where one group of players doesn't enjoy the way another group of players plays, because the first group's playstyle is obviously superior. The term was then coined to draw attention to, and subsequently mock, this behavior.
I like to think I am a fairly active member in this community, but I am guilty of exactly the BadWrongFun you are describing here. I do not always fight for what others would consider my best interests, I enjoy the site rankings. I love odd games with weird rules sets, and I adore the various Win Conditions, including the dichotomy of play between WTA and PPSC. The effect Taking over CDs has (i.e. not an adjustment to rating but adjustment game limit) is the only reason I have taken over the Cds I have taken over, and I see it as a wonderfully well built punishment (I NMR'ed, thus degrading the quality of game for my fellow players, so, as penance, I take on less than Ideal positions to improve the game experience for other players, until My debt is deemed repaid.)
I think the person in the OP did not take their punishment seriously, and that is very unfortunate, but it concerns me a great deal if we are to set about defining the right way to have fun, as my brand of "fun" is not likely to be the officially endorsed version.
All that aside, is it possible to prevent CD takeovers at game creation, making it a closed game at the outset? I assume a password does the trick, does it not?