This guy breaks down just how bad the layout of the new PHB is. The cross referencing is non-existent and the subsections seem to go in the order someone thought of them. I’m sadly unsurprised that they’ve not improved on any of these problems which existed in the original 5e PHB.
Pirated ones are even harder to navigate.
Not if they properly set up the PDF.
5e.tools is an amazingly easy-to-use resource. Also it’s open source, WotC could just fork it and make it the official resource!