This guy has gone weird from the beginning.
The Germans had to get from the Rumanian border - the German portion of Poland to Kiev, or all the way to Smolensk in Russia, beyond the Pripet marshes, to cut south to Kiev. The logistics effort was enormous, and most of the Soviet armies were in the way of both arms of the attack between them. That took months to move 600-1000+km, fighting all the way.
The Russians in 2022 just had to go less than 100km to the outskirts of Kiev from their railheads in Belorussia against little resistance.