People have been mocking him for the price, the no-due-diligence clause, and other aspects of the contract since they became public. While later movement of the stock market may have made it even worse for him, it was a ridiculous deal, on its face, at the time negotiated (and even worse for Musk as a buyer given his public comments about Twitter.)
How was it a ridiculous deal at the time? He paid what the company was worth just a few months before. I think it is normal for acquisitions to be higher than the current stock price. Initially it wasn't even clear whether the deal would go through. Had his offer been significantly lower, he may have not succeeded.
People have been mocking him for the price, the no-due-diligence clause, and other aspects of the contract since they became public. While later movement of the stock market may have made it even worse for him, it was a ridiculous deal, on its face, at the time negotiated (and even worse for Musk as a buyer given his public comments about Twitter.)