Managers Own Your Job Satisfaction, Not Your Happiness

Well, sure, as far as that goes. I think when the manager the author was criticizing was asking "are you happy", he probably had an unspoken "in your job" at the end that.

That said, we spend the majority of our waking time working in our jobs, so job satisfaction cannot be entirely separated from being happy generally. If you're doing something that makes you unhappy for most of your waking time, it's hard for that not to have an impact on your overall life.