After the loss of Leopard 2 tanks in Turkey maybe the Germans are worried that the tanks will suffer a similar fate at the hands of the Russians.
It would be pretty humiliating if RT could show brewed up Leopards in Ukraine. Compared with Challenger and Abrams they are not that well armoured.
Armor matters nothing for whether we'll see brewed-up tanks. We'll.
The moment either challenger or abrams (or t-14, or whatever) enters combat en masse - you'll see charred-out turretless hulls.
It's tank, not a dreadnought.
Mobility kill, 152mm fire mission (or even a drone grenade through an open hatch after the crew left) - boom.
Or Kh-series missile strike. Or Tornado strike catching squadron on the march. Or airstrike. Or...
It's a big war. Tank is a consumable. Tough, resistant, but consumable.