>

Then why not clarify that (re:ableist)?
None are lazy or unproductive, you can do them lazily or unproductively.
It's all about how you engage with it and what you get out of it. >

They are all sedentary activities, which are seen as lazy. You're right that they can be very productive, like watching educational programming or the fact that videogames can help with hand eye coordination, decision making, reaction time, and be social activities. 
But they all involve largely sitting g on your ass not moving, which is pretty lazy.
Unless you're playing wii sports or some augmented reality VR that has you up and moving, I guess, or you watch movies while on the treadmill or exercise bike. >

Not everything needs to be physically stimulating in order to be productive. Mental and cognitive activities are important too. This is how the dumb jock stereotype started!
Also, this is a bit ableist… >

As I said, it can be productive, but it's still lazy if all you do for entertainment is sit around watching TV, playing video games, or reading.
And fuck off with your ableist comment. Laziness doesn't include people who don't have the choice to be more active.