Actor-director Ben McKenzie isn’t afraid to make a bold statement. For instance, when we meet up at a hotel in Miami to discuss his debut documentary, Everyone Is Lying to You for Money, he’s wearing a blue baseball cap stitched with the words “Make Lying Wrong Again.”

That clear reference to a certain occupant of the White House and his political movement is by no means McKenzie’s most provocative statement on matters of urgent relevance. His new documentary, which opens Friday in New York and Los Angeles, takes on another sacred cow (or sacred bull, if you prefer the language of Wall Street): reverence for cryptocurrency. In short, he views crypto as a scam.

“Crypto really only has two use cases that…