A friend who was over for dinner raised an interesting point about Germany's reluctance to send Leopard 2 that didn't occur to me.
So far people who say "it's a historical thing" focus on the fact that Germany is uncomfortable with the Nazi past. But on the other hand consider the Russians, I saw this on pro-Russian telegram this week:

They've been playing up the Great Patriotic War theme all week. Now we've heard repeatedly from western media that Kremlin seems to be interested in another wave of mobilization and is putting out their feelers at the moment.
When Ukrainian nationalist brigades get their hands on Leopard 2 do you suppose they can resist the urge to cosplay a bit and paint 3rd Reich iconography on them? And when such a tank gets captures on photo you can be sure people like Medvedev is going to be waving that photo around and give speeches like "Comrades! 80 years later German tanks are once again charging through the plains of Ukraine, as before we cannot retreat, Moscow is behind us!" And next thing you know nationalist feelings lead to another 500,000 mobilized thanks to this narrative.
Abram doesn't seem to get this treatment, just Leopard. If the above plays out then you could make a good argument that Leopard 2 (but not other NATO tanks) is overall a negative for Ukraine.
So far people who say "it's a historical thing" focus on the fact that Germany is uncomfortable with the Nazi past. But on the other hand consider the Russians, I saw this on pro-Russian telegram this week:

They've been playing up the Great Patriotic War theme all week. Now we've heard repeatedly from western media that Kremlin seems to be interested in another wave of mobilization and is putting out their feelers at the moment.
When Ukrainian nationalist brigades get their hands on Leopard 2 do you suppose they can resist the urge to cosplay a bit and paint 3rd Reich iconography on them? And when such a tank gets captures on photo you can be sure people like Medvedev is going to be waving that photo around and give speeches like "Comrades! 80 years later German tanks are once again charging through the plains of Ukraine, as before we cannot retreat, Moscow is behind us!" And next thing you know nationalist feelings lead to another 500,000 mobilized thanks to this narrative.
Abram doesn't seem to get this treatment, just Leopard. If the above plays out then you could make a good argument that Leopard 2 (but not other NATO tanks) is overall a negative for Ukraine.