"Young evangelicals are increasingly turning away from Israel" [1]
[0] https://www.haaretz.com/us-news/a-quarter-of-u-s-jews-agree-...
[1] https://www.brookings.edu/blog/order-from-chaos/2021/05/26/a...
Jews and Evangelicals generally support Israel, albeit for different reasons. Some are, as you note, increasingly unsure of that support, especially as it extends the rule of a government that is widely seen (not just by Israel's enemies) as cruel. But older Evangelicals have a nearly fanatical support of Israel -- including those same policies.
And in general, Americans see Israel as an ally in a turbulent Middle East. Their support for it will depend largely on their perception of Middle Eastern politics and our need for their support.
Jews are a small minority in the US. Evangelicals are a large minority. So you can get countervailing trends that end up making both what you said and what the GP said true.