Translation: I stopped reading novels and then found it difficult to start again.
The problem isn’t the fluff we read online. The problem is that when you go long periods without reading novels, it’s harder to pick up a novel and enjoy it. Reading fluff online doesn’t make you stop reading novels, though, any more than watching TV makes you stop reading novels. It’s entirely possible to do both, with the caveat that everyone’s time is limited. But there’s nothing about browsing online that intrinsically makes it hard to read novels.