I'm sorry, but that's not what the article says. 90% of respondents think Abbas should resign, but that is separate from "approval". FTA:
Despite the devastation, 57% of respondents in Gaza and 82% in the West Bank believe Hamas was correct in launching the October attack, the poll indicated. A large majority believed Hamas’ claims that it acted to defend a major Islamic shrine in Jerusalem against Jewish extremists and win the release of Palestinian prisoners. Only 10% said they believed Hamas has committed war crimes, with a large majority saying they did not see videos showing the militants committing atrocities.