If you are going to do this to the Win 10 OS then you might as well go and install Windows 7 as that’s essentially what this user/creator has done, on top of several features of the system which have gone backwards in capability, who knows if this person has encrypted their own data collection into the system :-\
TBH I wouldn’t trust this OS as far as you could throw it :
no Microsoft support either and probably some legality issues will arise from it yet :-\