I think the difference is that the digital wool fools us into thinking, at least at some level, that we're being productive. It's much easier to pull yourself away from the TV to "do" something because watching TV genuinely feels passive. Consumption of content on the internet/smartphones blends the passive entertainment with a feeling of productivity so well that you feel like it's actually worth it to just check this or that app, or to just scroll for a little bit longer to see if you happen across something that actually has value. It's harder to break away from.