ICJ has made no such finding. They will probably making a ruling on genocide allegations in the coming years; they certain have not made one yet. The opinions they've issued so far are here https://www.icj-cij.org/decisions
ICJ found the accusation plausible, and did later in another case conclude that the israeli occupation of palestinian land and apartheid is not lawful and must stop.
Whether ICJ had found genocide perpetrated or just plausible does not matter very much since international law demands that even the risk of genocide triggers state action to put an end to that risk. The ICJ judgement regarding plausibility also made demands towards Israel, which that state has refused to comply with.
Starving a population of millions and systematically destroying their homes and infrastructure does not become jolly fine and dandy just because some court hasn't yet deemed it genocidal.
This is still not accurate. What ICJ found plausible was "some of the rights claimed by South Africa and for which it is seeking protection". The then-president even clarified explicitly that the plausibility finding was about the existence of these rights, not the occurrence of genocide [1].
Noone is saying things are "jolly fine and dandy", but it's important to stick to facts when making such accusations.
It's not nitpicking - what the court is entirely different from what you stated (though it's understandable as a lot of sources misrepresent it).
The court can issue orders without finding any sort of violation, which is what happened in this case when they ordered Israel to "prevent genocide". It can be interpreted as a reminder to Israel of its obligations.
States have a clear obligation to stop the genocide in Palestine. Only the mentally infirm distrust that one is ongoing. Due to rules of process and the perpetrators waging war against the court it will likely never make a sound judgement in this case.
It has, however, found reason to order Israel to take certain actions, with the express purpose of preventing genocide, which the state of Israel has refused to follow and its politicians, pundits and other prominent members of israeli society have kept declaring their genocidal intent over and over again since then.
Do you worry more about the interpretation of legal minutiae than a developing mainstream in international relations that considers genocide and other forms of indiscriminate murder permissible?
