My dad actually refuses to read anything good anymore because he doesn't think he has the self control to avoid binging on series. For most people though, they read slowly enough that instead of watching 15 episodes of a show in a row they work through one book, which feels like a slower pace.

There is a difference in the level of "fulfillment", the degree of satisfaction that one can only earn from active engagement. Binge-ing on Netflix series is easier, more passive, to the extent where it has to poke you after 3 episodes to make sure you're still conscious.

I wouldn't call reading fiction "active engagement". The only activity in that is turning pages and occasionally changing the way you sit.

(Or maybe it's just me. Either I don't know how to read books properly, or have all the necessary activities running as background processes in my head, not requiring conscious control.)