Melitus will refer you to what he said you guys like to say earlier' "No-one can be TOLD what the Matrix is...'
The point is that until AFTER you leave the Matrix you are part of a deceptrive system and from your point of view, your rescuers are no different. Yes, they were indeed offering you freedom but that makes no difference- your entire experience, motivations, and decisions that led to that moment were all based on falsehoods. We have already established that getting something right by accident does not validate the choice...
So even if you chose freedom, you were part of a deception that made your decision invalid. You got it- lucky for you! But from the logic you were working with, you may as well have ended up with a fish. Or for that matter, have gone out to get a fish, and ended up getting freedom! No matter what, the choice- and most certainly your reasons for making it- was based on false information.
"A man is the sum of his choices," says Melitus. "You all disavow your false lives of sleep in the Matrix- the invalid life of a slave. So how can I believe that your decision to leave was any more valid than any other decision you made in the Matrix?"