It is designed to be a safe solution with zero risk of damaging the bootsector.
Windows 7 has been out of support since January 2020, so Microsoft no longer provides updates or consumer activation services. Microsoft Learn Remove WAT V2.2.5.2 - Windows 7 Activation
How to Turn off Windows Activation: 3 Effective Methods - wikiHow It is designed to be a safe solution
Most versions include an Uninstall option, allowing users to restore original activation files if needed. Remove WAT V2.2.5.2 - Windows 7 Activation