I still find a decent amount of the integration, like KIO, is still there and works well - it puts MacOS and Windows to shame in terms of how I can just interact with files anywhere as if they're native within KDE apps.

It's kind of a shame that Konqueror fell to the wayside, but modern browsers are so complicated I cannot fault them for focusing elsewhere.

All the development action went to the web. Dolphin's still pretty awesome.