You say this as if every single Windows user in the history of Windows doesn't just click every dialog box that says "OK" or immediately dismiss the UAC boxes that come up when something needs Admin access on Windows 7 and above. On Macs, at least, you have to enter the user's password to do anything damaging.

Watch the average user do something similar with the Windows UAC popup. At least Apple requires a sudoers password for most of theirs.