Wasn't that the point? They knew both sides would be pro Israel and sent a message that without more Palestinian support, the Dems wouldn't just get their vote.
It worked, the Dems have been nothing but shocked and aghast at the outcome. Now the pro- Palestine base are hoping the Dems turn against Israel for the 2026 election to win back their vote.
...the Dems won't, by the way. They might pay more lip service to it, but they'll never be anti-Israel.