I find that IntelliJ IDEs are fine, but not nearly as amazing as they're often hyped up to be, and similarly while Xcode has problems it's not nearly as bad as is often claimed.
My experience is somewhat colored by Android Studio and JVM ecosystem stuff like gradle and proguard though, which have been more cumulative pain for me than anything Apple-side in a long time (Cocoapods was pretty gnarly but SwiftPM has fixed that).
It allows you to easily install and maintain several versions of Xcode (beta / RC versions).
And, more importantly, uses aria2 for HTTP download, which has resumability.
Xcode is so sluggish it's slower than an electron app despite being native, the xcode app upload is so broken even Apple released a third party tool to bypass their own IDE and its undocumented config files look like from the 90s and do not work well with git.
The UI is sort of okay but that's not going to cut it. You can feel the decades of cruft in this IDE, it feel like using Borland.
> Xcode is the worse IDE I ever used
let me introduce you to eclipse...