I get what he's trying to say, but the danger is people (especially management) getting the wrong impression. The risk of "move fast is good" is that it becomes hustle culture where people rush under deadlines and eventually burn out. There are plenty of occasions where slowing down and being thoughtful is beneficial. Often stopping focus is what gives eureka moments as the other side of the brain starts churning once new input ceases. There's a reason the cliché story of your best ideas happen on the toilet or in the shower are a thing.

It's like people reading Radical Candor (which I quite like) and concluding that being an asshole is ok.