I feel like the main reason that the experience is so bad is because nobody is working to unify a touch OS experience and a desktop OS experience. My perception as a user is that the iPad OS and macOS teams are completely siloed.

There are aspects of iPad OS that are becoming reminiscent of desktop counterparts but they always seem half baked.

The file management experience on iPad in particular drove me up the wall when my wife asked me how to do the simple task of transferring a several hundred meg image from her Windows laptop and import it into ProCreate. The iPad OS had some UI to do this task but it was painfully buggy and slow, and hung up constantly while trying to copy the file.