Stupidity: The whole thing about the Klear energy source is that it is solid hydrogen. Claire as the governor of Connecticut supposedly signed off an entire power plant based on it. Yet not only she is mighty surprised about the fact that it has potentially flammable issues (but she herself brings up the Hindenburg), but also the whole meaning of Miles' machination down to the presence of the Mona Lisa, is to impress world leaders and 'unveil the future' showing that his home is powered by it. That does not make sense; if the energy source is so experimental that a single house powered by it is gonna be such a breathtaking reveal, there can't be a whole power plant in a major US state already signed off on that technology, that somehow involves literally piping the gas through homes.
Suggested correction: Yes, it's stupid, but the movie is criticising that certain stupidity, not committing it. It's the dangerous type of stupid that Silicon Valley leaders, who believe in moving fast and breaking things, often manifest. Don't believe me? Well, watch a video called _"Our Enemy Is the Ivory Tower," American Tech Billionaire Says_ by Sabine Hossenfelder.