How do wildfires help restore soil nutrients?

When plants are burned in huge quantities in wildfires, all the nutrients that they all held inside them actually seep into the soil- they do not just disappear into nothing! Energy rule- energy cannot be created or destroyed. e.g. a baby grows by taking 'stuff' from its environment, it does not grow from nowhere! So back to the question if all these plants containing all these nutrients are burnt, all those nutrients do not go with the fire- every single nutrient in those plants goes into the soil- which in turn promotes new plant growth in the dormant seeds in the ground, which begin to grow in the new space created due to light being able to reach them; and the cycle goes on.