You are trying to rationalize by picking parts of the article that fit your (probably) western brain. The truth is the Palestinian population has been radicalized for some time now by their education system and their media https://youtu.be/W3jHj93JFMQ

I suggest you read the actual questions of the poll and the results instead of trying on some reporter interpretation: https://pcpsr.org/en/node/961

https://www.cnn.com/2023/12/21/middleeast/palestinians-back-hamas-survey-intl-cmd/index.html

Most Palestinians in the West bank and Gaza support Hamas, even after their October 7th actions, so classifying them as terrorists or not is kind of a gray zone right now.