lemme respond quickly: code signing certs are in use by many more than just microsoft. if i want a code signing cert from digicert, microsoft doesn't get any money, digicert does. i can use it for more than just powershell scripts, of course, i can sign anything. they are useful things to have. getting them is a pain in the ass, yes, but it's supposed to be. they want to filter out identity impersonators and do everything they can to issue a cert to a person that is who they say they are. that's the whole point of the cert, so that's why you must show all of that proof.