Where is the line though? What is genuine enjoyment versus a dopamine hit, like a mouse pounding on the lever to get as much cocaine or electrical impulses possible? It’s all chemical reactions in the end I suppose (says my internal nihilist).

I think a key difference is that Snapchat is not a feed app. There's no endless scrolling to waste 30 minutes on to give you that dopamine hit. The time spent is mostly being spent as a messaging app I suspect if you look at the levels of use of app features. Do you think it's a problem to spend half an hour a day texting + sending pictures to people?

Not endless, but there is a feed of snap stories always.

Not if you don’t have any friends! Boom, problem solved.