I use Lightroom CC all the time, and I would love to manage and edit all my photos on an iPad Pro, especially since editing with the Apple Pencil is so much fun on this display. But I have no desire to import hundreds of RAW files into my camera roll and iCloud photos account. When I brought this up, Apple very proudly pointed to a new Siri Shortcut from Adobe that imports photos from the camera roll into Lightroom and then automatically deletes them from the camera roll.
I couldn't test that Lightroom Siri Shortcut, since it's not yet available. But I can tell you that macro-based hacks around the limitations of an operating system are not usually included in bold visions of the future of computing, and that Siri Shortcut is a pure hack around the limitations Apple has imposed on the iPad Pro.
Oh, but it gets worse. I shoot photos in JPG+RAW, and the iOS PhotoKit API only allows apps to grab one or the other from the camera roll. So I could only import my RAW images into Lightroom, leaving the JPGs behind to clutter up my camera roll and iCloud storage. That's untenable, so I just gave up and imported everything directly into Lightroom using my Mac, because my Mac doesn't insist on abstracting the filesystem away into nonsense.