Molotovs will continue to be a no-brainer until the Soviets get something else to spend their munitions on.
Exactly this.
I don't know how mentally challenged one need to be to think that molotovs will not be the go-to thing when it is the ONLY non doctrinal way of spending munition besides mines.
On top of that, its still additional fuel upgrade, something that germans pay nothing for, because its already included for them.