I believe that once you buy a device, you own it and you should be able to do whatever you want with it. You should be able to root or install a custom OS and customize it to your heart's content. Knox coupled with Samsung's locked Snapdragon bootloader prevents Samsung phone owners from doing any of that. And on Exynos phones, when you trip Knox, some features stop working on the stock OS and your warranty is void. Doesnt matter if you relock the bootloader, those things are gone. That was already unacceptable to me. Recently though, they also began disabling the camera on the Z Fold 3 when the bootloader is unlocked, which makes me even madder.