I think it's stupid if true, but I get the impression that progressives decided to react to the "initial" part of this, where it was just Palestinians attacking, with "wow that's so bad, who would shoot people?" and waited until after the IDF started bombing to condemn Israel. I think they believe it has some optical value, I really don't though.

It's either this, or the massive bullying from Posters Like You that got most of them to make generally better statements over the next couple of days.