iTunes is the single worst most rage inducing software I have ever experienced. It is the only software that has brought myself and numerous family members to literal tears. Its concept of “syncing libraries” in the early iPhone era was so unbelievably broken.
I wish I believed in software hell because then I would be happy knowing that’s where iTunes existed.
iTunes was responsible for my moving from iPhone to Android. My first phone was an iPhone 3G. But I could not simply transfer .mp3 files onto it from Linux; I had to run iTunes to transfer music onto the iPhone, and that meant loading up a VM running Windows just to run iTunes. (And pass the USB slot into the VM, and set up file sharing... it was all doable, and not that hard, but it wasn't simple).
So my next phone was an Android phone. And I could just plug it into a USB slot, and it showed up as an attached drive, the same way a thumbdrive did. Simple file transfer, at last.
That was nearly twenty years ago, and I have never bought an iPhone or iPad since.