OK, but hospitals don't get built by people waking up in the morning, buying some bricks and stacking them up. Hospitals (and anything else worthwhile) require a lot of people with specialized skills to work together while other people make food and roads and schools and so on. Some amount of talking is required to coordinate it all.

Is the fraction of people who actually build things small? An economist would say no, we're at nearly full employment. To the extent that too many people are doing non-worthwhile things in their job, the solution to that might involve more talking, not less.