Hi Sasuke__Uchiha,
That's correct, they cannot change the User Accounts in Control Panel. And, you can hide more Control Panel items if you wish.
The problem now is, Windows 10 Home does not support Group Policy & this is the only way to tweak Windows to meet your requirements.
https://www.microsoft.com/en-ph/windows/compare...
You may, however, try downloading this tool to install Group Policy Editor in your system but I can no longer guarantee it's credibility. You can try though but ensure creating the System Restore point first.
https://www.majorgeeks.com/files/details/add_gp...
(Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.)
I hope this helps. Let me know how you go. Thank you!
Sincerely,
Paul A.
Independent Advisor