May be true.
But doing "rewarding" work encourages your body to emit more dopamine. Some people call it "the flow", others "hyperfocus", but it is a constant stream of dopamine that keeps you doing what you currently do. And you can interfere with the emittance and absorbtion by using caffeine.
I have never understood why people feel the need to use terms like "dopamine" in very pop culture and highly unscientific way, instead of just describing the state that they are talking about.
The other day someone told me that they "sense a high concentration of acetylcholine" in me. Thank you, I guess?
Personally, I blame Jordan Peterson. it's not that he used those terms incorrectly (he didn't). It's that the general public interpreted them in a way that went on to live a life of its own.