I have checked with Oneplus and other android device, there is an amazing feature, which use to disable the quick panel in lock screen. Now in Samsung none of the models have this feature. But this is very useful and needed feature otherwise, if the phone is stolen they can easily changes the system to DND mode or silent mode, which is the main or 1st option to find the phone by calling it. I know there is a feature where the theif can't turn off the phone or turn off the internet. But i think this is also very urgently needed.
While Samsung devices might not have the exact feature you're looking for to disable the Quick Panel on the lock screen, they offer a comprehensive suite of security features, particularly through the "Secure lock settings" and "Find My Mobile" service, that aim to protect your device and help you recover it if lost or stolen. Focusing on strong lock screen security and ensuring Find My Mobile is properly configured are the most effective steps you can take on your Samsung device to mitigate the risks you've described.
It's understandable why you see the ability to disable the Quick Panel as a valuable security measure, and your feedback is valid.
