An engineers isn’t going to say “EVs will never work” or “reusable rockets are impossible”. They’d say things like “we’re really going to need to minimize weight and try to build better batteries to hit that range goal” or “it’s going to require a lot of money to do the R&D for reusable boosters, you need to land a NASA contract so we can afford dozens of tests”. Engineers express tradeoffs far more than absolutes.

Musk has enthusiasm, yes, but he’s let his luck at PayPal and successfully buying Tesla from the original founders go to his head. Nobody is right all of the time, and no serious project goes perfectly according to the original vision without adjustments. There’s nothing wrong with the idea of an electric truck — companies with better engineering culture are making great ones — but the Cybertruck failed exactly the way everyone who isn’t a superfan expected: it’s designed in a way which guarantees high costs and it just doesn’t deliver corresponding benefits for most people. Diving into the culture wars against a large chunk of potential Tesla buyers was a bad idea but even if he hadn’t, there just aren’t that many people who have that kind of money to spend and the ones who do usually won’t accept so many limitations and flaws.