Germany as an extreme example has the survival of Israel as state doctrin. So that is a hot topic by definition.
Then there are many jews living in the west who sends weapons en masse to Israel - and there are also many Palestinian/Arabs living in the west. All that directly effects us.
Ethopia on the other hand is one of few african countries that was not (really) colonized. So there are not so much ties. The strongest is probably reggae and Haile Selassi chanting in songs, but most have no idea who that was. So, people are less interested naturally.
Individuals in the west can't buy and send weapons to other countries.
Europe started rapid remilitarization as a direct response to the war. The increase in military spending in European countries not participating in the war is comparable to worldwide investments in AI data centers and infrastructure.
Then there is the fact that a permanent member of the UN Security Council is waging an old-school war of conquest. If we assume that the post-WW2 world order is gone and wars of conquest are legitimate business again, the world will reassess other aspects of that order as well. Including the idea that people have inherent rights beyond those their government is willing to grant and capable of protecting.