Agreed. Windows 7's UI is blazing fast compared to Windows 10. Windows 7 inherited all the good things of Windows XP, while Windows 10 tried to look similar to both Windows 8 and Windows 7
I'm trying to imagine being a customer for this kind of service. When would I be satisfied with a pen testing service?
If I'm not familiar with pentesting methodologies, my only metric of satisfaction would be the pen tester's reputation i.e., if a well-reviewed pentester says my site is OK, then maybe my site is safe.