To be fair, I'll admit there's somewhat of a double standard when it comes to silence in regard to US support for Saudi Arabia vs Israel. But realistically, for me, I don't think the answer is to offer full-throated support to Israel and to be quiet about issues Americans have with it. Especially if it risks spiraling into a broader conflict.
I do think there are particular aspects about US support for Israel, outside of humanitarian concerns, that lead to people being more critical about US involvement in the conflict.