Not just all or nothing
I spent 30 mins today trying to disable GooTube on my Xperia SP (Manufacturer's default load, no operator customization).
You can disable any other app. Try to disable a google app. Any of them. It will be silently re-enabled within 5 mins if you have updates on, updated to latest and shoveled down your throat do you like it or not.
So on top of that there are defences against "customer disabling it".