I don't think is recent or a trend, but a few weeks ago I downloaded a bunch of stuff and from 36 (I think? might be more) titles I tried to download, at least 12 were only available in pdf (I don't have the little list I made on me right now but I remember Land, Detective Conan - which I eventually found in cbz - and a bunch of Front Mission manga are the ones I remember).
Also, while a lot of comics are ripped like shit, I'm yet to download a scanlation that isn't on some low as fuck resolution, only stuff that gets translated and then scanned seems to have decent resolution scans.
I'll admit that I'm probably being too demanding, but a lot of the stuff I'm looking for I'm only interested in art-wise and having the zipatones become a gargled mess of gradient greys is something that gets me VERY triggered. I know this is something that's probably on me since I've only now started getting into non-shonen shit but a lot of manga seems to thread between "characters so cold they're almost autistic" and "Eisner-tier melodrama and exagerated reactions", and it becomes very grating after a while.