I'll keep it short:
His name is Scholz.
He didn't "chat" with Putin over New Year. Last time (2 Dec) he demanded all Russian troops to leave UA soil.
He made it clear that Russia must not and will not win this war. Many times.
MoD was in Washington last March and certainly didn't ask for Leopard export approvals. Btw he is a she...
Germany's army is criminally underfunded, for decades.
We can't supply what you wish for within a blink. We try to ramp up ammo production, but it takes time obviously.
You are right though Germany should be more responsible and esp in terms of GDP, but don't forget the social cost for over 1m Ukranian people in Germany, incl 200k kids at schools (without speaking any German, kind of a problem).
We need more accuracy about a highly complex topic with many unknown sensitive details.