Can we really trust/rely on Internet Sorting Hat Simulators?

The Real Sorting Hat uses magic to determine the house. Online Sorting Hats use (hopefully truthful)answers to a quiz. Does taking a online quiz, even the 포터모어 quiz, really determine the right house? My friend says since harry got to choose his house he is allowed to rig/fix the 답변 to the 퀴즈 so he can be in the house he wants. what do 당신 think?