I think they use the phrase legacy forest because the term old growth doesn’t really apply to these forests. They are older than some, no doubt but in terms of the natural stand progression or “life” of a PNW forest they are still kinda young. Maybe like teenager or mid 20s if we are using a dog year analogy.

I think the phrase old growth has sort of fallen out of favor as the focus in forest conservation has moved to cultivating complexity rather than old trees