If you only criticize civilian casualties when Palestine resists, then your concern isn't civilian casualties. Your concern is Palestine resisting massacre.
It is possible. But in this case, it is occupier vs occupied. An ethnoreligious state vs stateless people being ethnically cleansed. Something being possible doesn't make it factual.
Dude had a clear idea he was expressing. The world isn't a marvel movie, there are no good guys or bad guys, only subjective observations of two different people with different motivations. Depending on how you interpret the situation, you could come to the conclusion that retaliation was inevitable and not have empathy for the perpetrators. You can also hold the opinion that killing sucks, regardless of the circumstances despite this. Making this a good vs evil thing frames this entire complex situation as much more simple than it is, and could be a harmful lens to view the world with.
It would have been okay if they just lived their live peacefully and actually cared to improve. But no, "we need more land and more people over the world seeing how we kill civilians". This is so going to work for sure, yeah.