No, it's not. Happiness is the action of self regulation. Happiness is choosing broccoli over a cookie because you know it is better for you. And then later choosing to have the cookie after you've had proper good food.

Someone tied up to a machine being dosed by chemicals to 'feel happy' would not be happy. Just like drug addicts, and other addicts, who are constantly chasing highs, are not happy people. They are fucking miserable, forever chasing and defining their entire life by those dopamine hits.

What you are describing is how children are. They would choose the cookie every time, eat cookies all day, get sick and throw up, and then get angry and sullen about it and still do it all over again. Because they have no ability to regulate, they just act in a state of pure dopamine seeking.