I know people who own tablets like to do their reading there and Zotero has an app for that (on iOS and iPadOS) and this PDF annotator feature is only available on Obsidian PC yet, but now that I’ve had a look at it, I’ve got to tell you: I’m impressed – the new PDF viewer seems quite capable: you can link to any annotations and can get a decent workflow going, even on files that are not on your vault but linked from your external hard drive (you can make a symlink to the top level folder holding all your PDFs and you’re good to go).
Anybody made the jump yet and said goodbye to Zotero? Or early days yet?