This is an absolutely mind-boggling take on the US-Israel relationship.
Diplomatically, there are countless times when the US veto, and the US veto alone, has saved Israel at the UN SC (as opposed from the General Assembly, where it routinely loses meaningless votes because there is no veto).
Financially and militarily, while US aid is a small dollar amount in some ways...it's not in many other ways. Financially, the amount of ammunition and materiel that Israel has burnt through in a month, with an insanely high rate of fire of complex weapons, is sustainable because of the bipartisan eternal iron guarantee of US resupply. The additional aid for this year (beyond the routine) is $14 billion. In context, Israel's annual military budget is $24 bn, and the cost of the war is estimated at $48bn. I think "funding a third of the war directly" is a much clearer way of portraying the impact of US aid than expressing it as percentage of total Israeli GDP(?). And militarily, Israel can sustain multi-front battles because of the military deterrence of the US rushing in its navy.
Politically, it is not like previous US presidents are unaware of the power of their office, no matter the type of Israeli PM in office.
Here is noted softy Ronald Reagan stopping a bombing with a phone call:
Here is another lefty snowflake HW playing and winning a game of brinkmanship with AIPAC by tying aid to settlement commitments:
https://www.ettingermentum.news/p/the-president-who-stood-up-to-israel
You might argue that Biden has less leverage (I'm not sure how), but, it's important to note here, his position in the 80s was to the right of Reagan AND TO THE RIGHT OF MENACHIM BEGIN HIMSELF, on the topic of killing Palestinian refugees:
I'm going to repeat that.
Biden's personal stance on civilians killed by the Israeli military is more bloodthirsty than one of Israel's most famous right-wing PMs.
Hence, Occam's razor is that he is fine with what has happened in Gaza. Reflected in his admin's stance - from "no red lines" to "they should shoot straight" to "their numbers are fake" to"concerned that the ceasefire will expose the conditions in Gaza."