Opposition to Israel makes some sense, if you divorce the question totally from what the other belligerent in this horrorshow says about the nature of its struggle. Of course, those remarks and clarifications, helpfully provided by Hamas leaders, are really quite hideous and baffling, and divorcing them from the question doesn't make any sense to me.
I dunno. Seems some people(here, I speak generally and not about any CFC posters particularly) are so determined to be "on the side of the underdog" that they'll ignore pretty glaringly obvious problems with said underdog and expect Israel to do likewise, and of course, Israel does not have that luxury.