Even in the focal point of the commercial itself, LD is the alpha with the office, the desk, the awards, the guy being pitched to... and FTX expects me to instead side with a random nerd with a cell phone? Oh, and the call to action is terrible -- FTX is hardly even mentioned. I would bet 9 out of 10 regular Joe's have no idea who the Larry David ad was for.
postscript - the ad could have been saved, if the pitch was delivered by someone familiar, with equal stature and affinity. Because we always see Larry arguing with his closest circle -- and because they are also wealthy and successful (which, subconsciously, provides credibility). If it was Cheryl trying to get him to invest? Definitely. Leon? 100%. Jeff? Maybe. Richard Lewis? I think it would have worked great. Ted Danson? Possibly, hard to tell how that would go emotionally. Jerry, Jason or Julia? Could have been amazing. But some random guy with zero credibility? It's just a fatal error, self-imposed, no way around it.