>I've definitely noticed it myself. I have a much harder time reading novels or any long-form content these days, and I suspect it's due to consuming lots of very-short-form content on a daily basis

I'm curious. Is your difficulty reading long form in paper form, or on a device? Have you tried reading actual paper (or even an ebook that is not "connected")?

When I switch to physical paper, it's almost as if my brain goes into a different mode.