No, I think you're right. Any negative impact of the internet on my thinking hasn't really come out in my writing. I model my non-academic writing style on that of my favourite writers, including Lewis Mumford, Ligotti, Thomas Frank, Erik Davis, Nietzsche, and so forth. I don't much like Twitter or Facebook or the other social media, precisely because the writing quality is constrained by the media.
I'd compare this problem to the one I have with movies. I love watching movies, but the more you watch the harder it is for the film-makers to impress you, because there comes a point where you've seen it all before. So it's possible to see or to read too much of a good thing, I think. In that case, you need to look around for new material and that takes some work. Now, I haven't read nearly as much fiction as I've seen movies, so I think I'm just lazy in looking for books that will appeal to me. Those books must be out there somewhere.