Ukraine is a de facto NATO member and has proven their worth in combat. They should get whatever they need.
The fact that the Kiev needs AFVs so desperately that Germany just went back on their moral planks indicates that the Russians continue to attrit UA AFVs at a high rate.
Every western system introduced requires it's own unique logistical tale, a burden that grows exponentially every time a bunch of antiques are added to Kiev's Order of Battle.
That's why the aid is now in the trillions.
Trillions.