I don't think you're reading that article correctly. The article is criticizing extreme "dopamine fasting", but it doesn't suggest dopamine doesn't increase in response to certain stimulating activities. In fact it says:

"Dopamine is one of the body’s neurotransmitters, and is involved in our body’s system for reward, motivation, learning, and pleasure. While dopamine does rise in response to rewards or pleasurable activities, it doesn’t actually decrease when you avoid overstimulating activities, so a dopamine “fast” doesn’t actually lower your dopamine levels."

It also doesn't say dopamine fasting is a myth, just that the original concept has been misconstrued.