Most people prefer to work with humans, not robots. Common experiences and getting to know people are a huge part of that.
Sharing stories and getting to know people humanizes them. It's much easier to hate "that team in another country" you've never met than that person you've had a meal together with and learned about their hobbies.
Not saying you can’t discuss basic details like did you do anything interesting this weekend, but these things like “share deep personal details” as mentioned in the article have no place at work.
Not to mention a lot of things get solved/decided over beers at happy hour. Coworkers shouldn't be your best friends but you're a fool if you're not friendly with them. Like you said, people aren't robots and a business isn't a machine.
There's a huge difference between learning that your colleague also happens to play chess, and sharing the vulnerability of how you handled personal grief in your life.
Your workplace is a community, not a friendship circle, and not a family. Community life has always had a certain level of formality to help paper over the differences between people in the community while still fostering a positive, inclusive environment.