I can assure you that a lot of mathematicians are spending time on this, but research level maths just don't move that quickly. As of writing this, the initial drop happened 41 hours ago, that is under normal circumstances not a lot time for reading and understanding a proof paper, and it is most certainly not enough time for publishing a rebuttal. One does not claim that someone else's paper is wrong lightly, you sleep on it, you discuss it with colleagues, you discuss it with the author (not sure how that part works in this case) before posting stuff on the internet that you might come to regret.