The important part:

According to accounts by Kristin Enmark, one of the hostages, the authorities were careless, and their initial approach to the robbers nearly compromised the hostages' safety.[7] Enmark criticized Sweden's prime minister, Olof Palme, for endangering their lives. Palme believed that if Olsson saw one of his close relatives, he might be willing to surrender the hostages; however, the police made a careless mistake. They misidentified Olsson and sent a 16-year-old boy who was unrelated into the bank. This caused confusion and resulted in Olsson firing rounds at the boy, who barely escaped. Olsson became much more agitated in general. After that, Enmark and the other three hostages were fearful that they were just as likely to be killed by police incompetence as by the robbers.

Ultimately, Enmark explained she was more afraid of the police, whose attitude seemed to be a much larger, direct threat to her life than the robbers.[10] Enmark spent decades maintaining that she had no affinity for her captors; she only did what it took to stay alive during the ordeal.

It is not disputed; it's proven to be a myth.