It's mostly been fine -- ublock origin is available, pages load/view fine (except I couldn't log in to ebay; could be ublock). what's really been bugging me is

It's mostly been fine -- ublock origin is available, pages load/view fine (except I couldn't log in to ebay; could be ublock). what's really been bugging me is that viewing PDFs seems to have gotten much worse. I don't _THINK_ there used to be a built in PDF viewer, but the flow from browser to Android's built in PDF viewer used to be smooth. I think the difference is, I have to explicitly download and then open the PDF. What I wish I understood is why it was necessary to permit only the handful of authorized extensions. Do most of them just not work? why not?