From the link you provide:

In 2012, Australian psychologist Gina Perry investigated Milgram’s data and writings and concluded that Milgram had manipulated the results, and that there was a “troubling mismatch between (published) descriptions of the experiment and evidence of what actually transpired.” She wrote that “only half of the people who undertook the experiment fully believed it was real and of those, 66% disobeyed the experimenter”.[26][27] She described her findings as “an unexpected outcome” that “leaves social psychology in a difficult situation.”[28]

I mean, maybe it shouldn’t have been done?