However, there's only so many times the enemy in this case is actually able to use the tactic. Russia has absolutely no way to replace losses on the battlefield with their birth rates, which are consistently among the lowest in the whole world. Much of the manpower in soviet times was from the former bloc that's now either at war with Russia, joined NATO, or a reluctant vassal like is the case with Belarus. Ukraine is also next to the only country in Europe where piling more bodies to the front works even to this extent, as there are fewer natural defenses compared to the likes of Poland and Finland.
Was there a conflict between NATO and Russia, it wouldn't be long before dying at the front would be the new Russian pension scheme. A dying empire that has been quickly withering even before a war, for three decades, simply doesn't have a route to a recovery.
And by some miracle, I wouldn't be surprised if the Panzer II felt more spacious inside. It's baffling how cramped modern SUVs and especially crossovers are compared to their external size.
Our relatively small VW ID.3 is more spacious inside than most small-to-mid crossovers in Europe (e.g. Renault Kadjar/Nissan Qashqai, Volvo XC40 etc.). It's still a lot smaller in external dimensions, and actually fits to parking spots.