i can't even guess as to why they went quiet. not one guess at all. we will never know.
edit: well they're not quiet now once they get called out
But everyone left of them didn't vote, and I think there are certainly more non-voting liberals than non-voting leftists, so focusing on an even smaller minority of Pro-Palestinian abstainers is silly.
Only 64% of the Voting Eligible Population turned out in 2024, what percentage of that 36% remaining do you really think is Pro-Palestinians that couldn't stomach Harris?