I'm a pre-Yahoo Flickr Pro user, and the most annoying thing for me is needing a Yahoo account. Every week or couple of weeks I'm presented with a Yahoo login p

I'm a pre-Yahoo Flickr Pro user, and the most annoying thing for me is needing a Yahoo account. Every week or couple of weeks I'm presented with a Yahoo login popup that 1) is inconsistent with the Flickr UI and 2) prevents me from being able to use my password manager plugin in the usual way (I have to copy-paste credentials). Otherwise, Flickr remains for me far superior to the other options out there. I don't use Facebook and don't have any interest in using Instagram to actively degrade my photos. My question is: Why can't Flickr do everything the other photo apps/sites do? I don't really need/want it to, but can Flickr be all things to all people? Is that important?