They are in a good position to help palestinian civilians, but don’t do very much for various reasons I know relatively little about.
Palestine is under occupation. Every time anyone tries to help (like aid workers or even NATO), Israel attacks them. People say let them resettle in Egypt. They shouldn't have to resettle, lose their homes, Egypt shouldn't have to provide refugees services, etc. People always say, "Other Muslim countries should help them so they must not care." False.
I'll let others fill in the history of the rest of it. TLDR: Palestinian civilians are not all Hamas, but they are treated as such.