It think it says something that you'd be willing to jump to conclusions. You "learned" it was sanitised and make a point about people willing to alter the truth, then you personally attach some meaning to it. You made up your own reality, when the word "[people]" literally indicates that the OP did change the quote. Instead of assuming malice, you could have also just asked why they changed it, or looked up why words would be in brackets, or give the OP the benefit of the doubt.