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Elon Musk is anti bitcoiner and supporting just doge coin, people were thinking that this will happen, that Tesla will sell their bitcoin holding, it could be because of business reasons or a way to manipulate the market in the future, but it was good that Elon Musk sold this coin and not having significant effect on the market.
If you are referring to huge investors as anti bitcoiners then you should include every institutional investors in this category including anyone who invest in the market who think about attaining a profit at a later date. One thing is established is that Elon Musk is a master manipulator not only in the cryptocurrency space but also in the stock market, so you can expect news popping up once in a while that could influence the market.