You're not wrong. I also understand the viewpoint stemming from that truth that having the option is not worth the extra features. I still think the trade off is worth it.
Just like while we have people tricked into buying apple gift cards for scammers we still don't decide to ban those cards because they do offer utility.
The number of steps and warnings required to unlock the bootloader on an Android device is so large that I have never heard of anybody being tricked into it. On the other hand, iOS is so rife with rootable vulnerabilities that it's becoming too cheap to meter.
Step 1: Open settings > Tap 'enable root mode'