The 4 actual points of recommendation are good: Listening to people first, giving credit to people by name, and other things are rather basic management and soft skills techniques.

I did groan a little at the anecdote about how their demo for a food identification product completely misidentified the photo of food and he improvised a hand-waved excuse to try to make it sound like a good thing that it identified anything at all. That gets at the less than ideal side of mixing acting/improv with business in my experience. Some of my closest friends have done improv for years, but they leave the acting and improv on the stage. When you work with them or talk to them you get their authentic selves.

Some of their other improv friends, though, can’t turn it off. They think improv or acting is key to their personality and every interaction feels like they’re trying to integrate you into a scene they’ve imagined where they’re more or less manipulating everyone into their imagined outcome.

The biggest benefit of improv classes is giving people confidence and hardening their ability to go into situations where they might fail (which this article acknowledges). It’s a fine line where some people start taking the improv/acting skills and using them like techniques to manipulate emotions and turn interactions into a scene where they’re the victor. In my experience with improv friends, people go to one extreme or the other in this divide and they either become more relaxed and easy to engage with, or become grating dramatic and manipulative in even low stakes social situations while believing my they’re amazing every audience with their charm. If you do improv, please make sure you go toward the former side of that divide.