I'm merely pointing out that the Leopard 1 is definitely not the Leopard 2. I still think that they would be better served with whatever leftover T-72s are out there than an outdated western tank with its own peculiarities and logistical challenges.
Rationalization of the UA tank fleet and other western and Russian legacy equipments into fewer types would be a post-war goal.
The Germans are also offering 88 Leo 1s, which need refurbishment, and Denmark is sending 20. The Greek Army has nearly 500 Leo 1s, some of which are being upgraded (no tank offers from Greece yet).
On the other side, the RF is scrambling to refurbish some 800 T-62s, so its starting to look like back to the future. I suppose the best indicator of usefulness would be if Ukraine declines to accept Leo 1s. The Leo 1's cousin, the Gepard AA system, is getting good reviews on knocking down the Iranian drones.
I remember when the Germans were doing winter trials on Leopard prototypes at Camp Shilo in 1965. It was the closest they could get to replicating the Russian steppes.