According to various rumors, Bitcoin is closely following Ethereum's results.
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Dude, you are mistaken! If even there are such rumors (which I doubt) then they are false. Your reference quotes a man from almost a year ago (maybe he has changed his mind in the meantime...) who has nothing to do with bitcoin core development. Who are the experts you mention? I did not find that in the article.
I suggest you clean up your act and sort out your sources.