I used the Script on multiple Laptops and PCs and it worked completly fine for me. I upgraded from Windows 10 Home to Enterprise, activated the ESU-Updates and activated permanently the Enterprise Edition. I can also recommend the “clean” Windows-Files from Massgrave.
That was about 8 months ago, so far no problems with security or problems with Microsoft have occurred. I would definitely use it again if I buy a new device that requires Windows and Linux would not be an option.