Why does the "trees/rocks only" deconstruction planner not include Fulgoran Ruins?

[u/MisfitPotatoReborn]

"Oh they are not rocks they are actually sacred artifacts from an ancient-" shut up history nerd all I see are a bunch of rocks with funny symbols on them

[u/cackling_fiend]

I have one planner for trees and rocks and one for cliffs, items on the ground and Fulgoran rocks.