They're feeding the genocidal fear mongering rhetoric of the Israeli far right, effectively becoming useful idiots for Netanyahu and his fascist buddies.
Before 2005 Gaza used to be like the current West Bank. I mean there's a good argument that the West Bank has it better, but let's not forget that the West Bank is and has been the victim of a slow burn genocide. "Don't fight back" is not the solution. Hell, the only reason peace talks got anywhere in the 90s was because of the very much not peaceful first Intifada.
By not feeding the fearmongering rhetoric of the Israeli far right, Palestinians would simply be forced to take the other option of laying down and dying.