Yeah, the Twitter acquisition wasn't obviously irredeemably stupid. I think it was a bad decision, but paying a 38% premium above market price for an acquisition of a public company is within the normal range. You can argue the markets were irrational and Twitter was overvalued, but you shouldn't argue it's obvious because it clearly isn't obvious to a huge number of investors. You could argue Twitter is a poor fit for Musk's goals, but that wasn't obvious either. Twitter didn't have to change radically to be worth its price. It just had to grow profits a bit and maybe help some of Musk's other projects (like Grok).