These days it feels particularly outdated. I'm used to Sublime Text and VS Code for most of my day-to-day work and I just find navigating code such a chore in Xcode.

The other issue I've had is if I want to change project/target/build settings, Xcode doesn't provide an easy way to do so. You need to poke around the UI to find where these settings and file relationships are set and change them that way.

There's a project file that I believe contains them all but it's not intuitive to modify by hand.