The problem is that there is more to the motion than its title, which is the same for most things, really. The problems with this motion include the insistence on a one state solution (against the expressed wishes of the Palestinian people) and a threat of wholesale proscription of Jewish communities.
I say this as a Green member - this motion overshadows really decent policy passed at this conference including two BDS motions. This is a highly controversial motion within the party and it was only carried over the line by entryists. 4/5 of our MPs opposed it as well as the leader and one of the deputy leaders.
If you want to understand things, you have to read past the headline. It's the only way.