Totally agree. It's an accessibility thing for me as big as my iPhone 6 Plus is, it doesn't compare to the much more easily managed environment inside iTunes for dragging things around.
The 11.x iOS upgrade amplified things as my 6Plus stutters and is not as responsive as under 10 and I tried 3 times to drag an application from a 3rd page folder to a folder on my home screen and gave up.
I also found it SO easy to delete apps from my phone. Although one can blame oneself for how they organize things, there's an app I only find by 'searching' so really wish they had a 'Open Location' type of functionality so I can easily delete it.
In iTunes, this was dead simple.
There's other reasons for considering 'other' alternatives too as I used to expel the benefit of the Apple 'system' but after struggling with Photos syncing issues with iOS/AppleTV and the ongoing issues with iOS 11 and the bigger push to iCloud (which doesn't work well with high cost data plans and expensive home (remote areas in Canada), and the form goes above functionality when coming to getting a bigger than 3TB drive with a brand new $3500+ iMac is seemingly ridiculous in today's scheme of things. But I digress.