The crux of the article seems to be: To support this new approach, he has employees leave their phones in their bags at the office and blocks access to social

The crux of the article seems to be: To support this new approach, he has employees leave their phones in their bags at the office and blocks access to social media on the company network. [...] Perhaps most important, his employees now check work email only twice each day. It's not just the reducing the hours, but making those hours more productive.