That’s simply unbelievable. Perhaps in rare cases, but I laugh when people say that work has more distractions and “the guy” that keeps talking to them stops them from being productive.
At home, if you have kids and a family - they WILL be a disruption and you can’t tell me they don’t talk with you and disrupt a work flow. I don’t buy you get 3x the work done. I think you feel that way without a commute and that’s fair. But if what you say was true, there wouldn’t be a battle between employers and employees. It would be obvious how much more productive people were - if they were 3x better.
I work from home. Don’t claim that there are fewer distractions. And I don’t even have kids. The number of times my wife needs me to do something during the day or calls from work or there is some house project appointment.
I literally will drive over an hour to an office to get things done at times. At an office, it is your space, you can shut the door, and you can ask an intruder to leave. I cannot see the logic of fewer distractions at home. I think that’s just what people say because they don’t consider their family a distraction when, from the employers point of view, they are.