Only my opinion and Im no expert by any means, but:
My advice to anyone is to learn to identify your trees in all seasons. Tree identifications is the skeleton knowledge that creates the framework for all other knowledge to be fleshed upon.
It is imperative for firecraft to know your trees (wood combinations for friction methods, birch bark tinder etc).
It is critical for mycology (mushrooming) to know your trees, fungus types are mainly linked to decaying forms of certain decaying woods.
It is necessary for shelter construction to know your trees (wood properties, strength, flexibility etc).
It is courteous for giving back to the ecosystem to know your tree properties. If you take live wood, you need to know what to do to maximise the chances of the tree protecting itself etc, how to coppice correctly etc).
It is safe to know your trees for wooden food utensils/ bowls (what is poisonous, what is safe etc).
Know your trees for food, edible berries/seeds/fruits/leaves/barks etc.
Trees for navigation (Altitudes, latitudes, proximity to running water)
Trees for art: what woods carve well.
Tree knowledge in bushcraft is like scales in music, maths in physics, binary in computing, scaffolding in construction etc etc