I have no idea whether Europeans work harder than Americans, but I do want to say that you can't extrapolate the overall work ethic of America by looking at the SF tech world. It's a very, very small (and very privileged) microcosm of the country.
Couched in the article: > US folks love talking about how hard they work. And honestly with service workers and blue collars I believe it. But not in tech.
Might be true for an established rest and vest company or position like sales or marketing, but the article seems to be wanting EU to be easier for startups. Not a single startup has that culture, especially when you’re building it from the ground up. You’re most definitely working 1.5-2x the hours as a regular job when it comes to starting a company and making it successful, even as an employee.